Metabones EF to M43 Speed Booster Review and Explanation + Testing Image Stabilization

[@timfritz7367]

Max, thanks for your great review! By the way, the micro usb connection and the jog dial on the speed booster are to allow cameras that cant power the lens properly to still manage aperture control of the lens. This is done by supplying external power to the speed booster via the micro usb interface and then using the jog dial to adjust the aperture manually. You wouldn't need to supply power to the speed booster externally if the speed booster supports power and control pass through, such as is does with the GH4... Hope that helps!

[@mikesphotography]

Great video Max, and great to see you such a proactive response to so many questions...here's one for you: Do you know what the image quality of the tamron 17-50mm is like compared to the panasonic 12-35mm? I have the panny but would like to build up a more versatile lens collection. Keep up the good work!

[@MaksimYuryev]

Mike Smith Thanks Mike! You know what I can't honestly say because I haven't tested them head to head. I had a 12-35 in the past but not at the same time as a 17-50. I should have a 12-35 coming in so maybe I'll have to make a video!

[@kuntaleroy7414]

I purchased the Metabones Canon EF/ Micro 4/3 Speed Booster XL-BL from B&H Photo in April of 2016. My application was using the Panasonic GH-4 and the Speed Booster with the many Canon lenses I had accumulated. The unit worked well most of the time, but the GH-4 would occasionally show the “Lens attachment failed” error screen when I attached a different lens. I thought it was the lens choice, but noticed that all but one of the lenses I had were original Canon units. On 09/29/2016 the GH-4 firmware was updated to version V25 and the Speed Booster interface problem began to occur much more frequently. I continued to think it may have been due to my inexperience with the GH-4 camera functions, so I tried to learn about and attempt almost every combination of camera and lens settings. Nothing worked. On 12/07/2016 the Speed Booster firmware was updated to version V2.5, and on 12/08/2016 the GH-4 firmware was again updated to version V26. Now EVERY lens I try to attach gives the same attachment failure error message. I can only use the combination if I place the lens inside the Speed Booster mount but only turn enough to secure it without actually connecting the contacts of the lens and the Speed Booster. Of course this won’t allow any lens communication with the camera, but will still allow the use of the lens as a completely manual unit. I have tried both the Green Power-Save mode (default) and the Advanced Manual Focus mode on the Speed Booster and I still get the same results. I find it almost unbearable that I purchased this unit mainly for the ability to use my Canon lenses on the GH-4 like I use them on my Canon bodies, i.e. with full control of the lens focus functions. I can’t believe a $650 unit designed to do this, heralded as the best unit of its type available in the marketplace, only lasted for a few months before failing completely. Of course I am beyond the 30 day period usually given for a return window. I could never give this unit more than one star, and would seriously love to give it much less than one star, if that were possible. I have never been as disappointed with a seemingly serious photography product as I have been with this Metabones unit.

[@kuntaleroy7414]

UPDATE: I obtained the information I needed to possibly get the unit repaired on 12/27/2016 and sent the Speed Booster to Hong Kong for repair (as is required by Metabones). I was required to pay the cost to ship there and back, along with any other custom fees for international shipping. I had no claim number and no guarantee that the repair will be accepted as a warranty covered item. I received the “repaired” Metabones Speed Booster back from Hong Kong on Monday (01/16/2017) along with the return documents. The unit was unpacked, removed from the plastic storage container, and immediately mounted on my Panasonic GH4 camera body. I then attempted to mount three Canon lenses in succession on the adapter- (EF 17-40mm f/4L, EF 24-105mm f/4L, and EF 70-200mm f/2.8L). Each lens I mounted failed any identification and acceptance by the GH4 camera. In other words, the Metabones unit was acting the same as before the repair process. I then decided to eliminate any possibility that my camera body was at fault by arranging a test protocol with a local camera dealer here in town. I took the Metabones Speed Booster, along with my camera bodies and lenses, to the camera shop for bench testing. When I arrived and discussed the issue with the store owner, he suggested I first attempt to mount the Speed Booster on two new camera bodies and witness the results before any bench testing was done. We mounted the Metabones unit on a new Olympus E-M1 Mark II camera body, attached an EF lens, and turned the camera on. The Olympus camera failed to accept or even recognize the lens and would not allow light to pass through the Speed Booster, and into the camera. We then tried two other Canon lenses, only to get the same results. Next we unboxed a brand new Panasonic GH4 body and tried the same procedure, only to get the “lens attachment failure” screen each time a lens was attached to the Speed Booster. At this point we were convinced the problem was the Speed Booster. My cost to send the unit to Hong Kong and back for repair was over $60. This means I’ve spent over $700 for a unit that does not work, even after an attempted repair. I can’t tell you how demoralizing this is.

[@kuntaleroy7414]

UPDATE: I received a replacement Metabones Speed Booster from B&H Photo today as a solution to this problem. Of course I was anxious to mount the adapter on my GH4 camera body and start the testing, and that’s exactly what I did. The adapter was initially mounted on the camera body and the camera was turned on. The first lens I mounted was the EF 17-40mm f/4L and immediately the mount worked. The GH4 accepted the lens and was fast and accurate in processing focus info from lens to camera to lens. The Speed Booster and lens combo also resulted in an apparent 1.5 stop increase in the lens aperture, allowing me to shoot 4K video inside my home office under relatively low light (1 small lamp) at 1600 ISO and get excellent perfectly usable footage. Next I mounted the EF 70-200mm f/2.8L mainly to test the autofocus accuracy and the GH4 / EF lens response speed. The combination worked flawlessly with fast accurate focusing even in that low-light situation. I dare say even new Lumix lenses equipped with internal memory of bokeh files to use with the GH4’s new DFD focusing technology would, at best, produce only minimal increase in this focusing speed. This is, of course, what makes all the hassle I went through worth it. Thanks B&H!

[@niteLifePRO]

The wheel on the side is for controlling your lenses aperture when you have a camera that can't. You have to power it through the USB below it.

[@Thejakemoney08]

Max Yuryev , on the Metabones website, it says the EF Canon to 4/3 is not compatible with the Tamron 17-50mm. It's the only lens they list on there that says it is not compatible. Have you or anyone else used it with the speedbooster? Is there a way around it? Can't seem to find this answer any where on the web.

[@MaksimYuryev]

Jake Money I heard of a couple people have issues (literally 2 people personally) and they both were contacting Metabones about it so maybe metabones put that up on the site so people would avoid it. Other do use it without an issue. If you want to steer clear just get the sigma version of the 17-50mm.

[@brinleysdrone4749]

I have a Canon 1D x mark II and would like to know, will metabones make a canon speed booster with EF mount on both sides? Could you ask them? This will eliminate the 1.4 crop ratio and brighten the image a lot! For video 4k production!

[@insertcoolnamelater9334]

On their website it says that autofocus is supported, so maybe they updated it. What's currently not supported is AFC (continuous AF) and AFF (flexible AF) and video AF for Olympus.

[@geogan2]

FYI, the new Speedbooster XL with the 0.64x crop (GH4 has a 2.3x additional crop in video), so for video, lenses actually become 35mm equivalent to... Canon 16-35 F2.8 L -> ~ 23-51 F1.8 Canon 24-70 F2.8 L -> ~ 35-103 F1.8 Canon 70-200 F2.8 L IS -> ~ 103-294 F1.8 IS The older version in this video with 0.71x crop is: Canon 16-35 F2.8 L -> ~ 25-57 F2.0 Canon 24-70 F2.8 L -> ~ 39-115 F2.0 Canon 70-200 F2.8 L IS -> ~ 115-326 F2.0 IS

[@geogan2]

***** Eh? I don't understand what you are saying there. The aperture change when using this adapter is because it acts like a magnifying glass and concentrates the light onto smaller area. It increase the affective aperture of a lens by 1 1/3 stops according to specs. So that means it's probably greater than the F1.8 I thought it was - i mean what is 1 1/3 stops larger aperture than F2.8?

[@geogan2]

***** Yes if you have a video, it would help - I sort of see what you are saying but it is confusing and also the manufacturer (Metabones) don't mention any of this either do they anywhere?

[@roww10]

The light entering the lens is the same. Individual FF photosites are larger than APSC or M4/3 photosites. Ex. Sony A7rii does not give the same low light performance of the A7sii. Both are FF: A7rii is 40 mp A7sii is 12mp on the same size chip. A7sii has bigger photosites. A speedbooster intensifies the light available into a smaller area.

[@rollojarvis6567]

at 16:42 you forgot the m43 crop factor. This would mean the Tamron lens you wrote turns into a 24-70, not a 12-35, although in actual fact that tamron lens is an APS-C lens, which is not supported by this adapter, so it wouldn't work at all.

[@MaksimYuryev]

I wonder how it worked for for 2 years then, and many others as well (just check the GH4 facebook groups) ;) shooting 4K the sensor is a 2.3 crop over full frame. Adding this speedbooster turns it into about a 1.7 crop. The lens will easily support 1.5 crop over FF (what it's designed for) in face the lenses Sigma, Tamron, Tokina makes is usually a bit wider about 1.4.

[@rollojarvis6567]

+Max Yuryev thanks for the response

[@eukicos]

One question that I didn't understand very well: the metabones has image stabilization or you are using the IS of the 70-200 lens?

[@MaksimYuryev]

Yes it used the IS that is in the lens.

[@thejohnsonsjourney3387]

So,i bought the Metabones SB for Nikon,Sigma 18-35 mm for Nikon and Gh4 since i didnt know wha the difference between the canon and nikon speedbooster.You said cant use any 200mm with it? Im now discourage about what i have.I am self studying right now to do wedding videos in the future

[@heyitsablackguy9553]

I bought this thing and tried it yesterday with the TAmron 17-50. AWESOME! Went to 2.0. However, It's HARD as hell to put on at first. Wish it came with a manual.

[@ConceptualViral]

Nice job on this. I'm learning about how to shoot with my GH4 (and how to shoot in general) and it's not easy. Your tutorials are very helpful. Thanks!

[@BenFox01]

Brilliant video :) Fills me with confidence to buy the GH4 - you mentioned the speed booster helps with low light? How does it do that? Thanks again!

[@BulliBlack]

+Ben Fox (BenFox01) Your aperture gets reduced by one stop, which lets more light in.

[@BenFox01]

Ah ofc, thanks dude

[@PaulHarwood856]

This review was super helpful. The mathematics part really helped me understand the benefit of this adapter, and now I'm not confused at all, which I was prior to watching your video. Thanks Max for all your hard work! - Paul Harwood

[@MaksimYuryev]

Glad to help!

[@PaulHarwood856]

Alright cool. You certainly did!

[@bluesmokegamer272]

I ended up getting this for my GH4, but the control on the aperture control placement on the speed booster is a bit annoying.

[@craigslater4899]

Hey Max, really enjoying your videos. I've looked all over the web and nobody seems to know the answer to this question. I’m going to be using a Tamron 24-70mm VC lens with the Metabones Nikon G to Micro Four Thirds Speed Booster. At the other end is a Panasonic GH4. Do you know if the Vibration Control still works with the metabones adapter?

[@Facesmany]

The Best explanation of the Metabones Speedbooster wow !! You got me sold, D-E-F-I-N-I-T-E-L-Y a must for the GH4 :) 

[@JePeVePe]

that little 'jog dial' - from their site: "Can use jog-dail button to control aperture when using external power supply. " So, without any external power supply, it has no use....

[@MaksimYuryev]

Jan Peter van Popta Thanks for sharing! Found that out after the video.

[@AndrewLXiong]

Great info Max...just wondering if this works w/ any M43 like the Olympus too or just Lumix. Thanks

[@MSU92AZ]

Did they end up releasing a firmware update for AF support for the EF? I am picking up a GH4 and this bad boy probably as well. I do see there are two different versions of this that have about a $250 price difference. What's the major difference there? And I guess, what's a good option for a telephoto lens to get super good distance while maintaining great quality at an affordable price to pair with the GH4 and MetaBones EF?

[@frankwhite4232]

+Andy Zagar yes they did

[@jocadesa]

With the new firmware update (you can update the firmware of the speedbooster with a USB cable) now you get autofocus!

[@banarne71]

Thanks for a good video. Have you compered the Metabone to the Viltrox EF-M2 Auto Focus Adapter Speed Booster? The Viltrox is much cheaper but is it much worse? I have the Panasonic gx8 and I want to use some good canon or Nikon lenses with long focal length E.g. canon 70-200 f/4 or f/2.8. Thanks! /Jon

[@waldoaberman4834]

Thanks, very informative indeed, feels like a teacher lol, btw hows the 3rd party lenses on Sigma/ Tokina is the autofocus brought over and supported by the Canon metabones?

[@MaksimYuryev]

Glad to help! The EF to MFT adapter doesn't support autofocus (yet) but does support image stabilization and electronic aperture control. When/If we get an update to the speedbooster third party lenses will work just as well as first party.

[@fabvregregoire8620]

Hi Max, great thanks for all those videos which help me a lot with my futur choices. I'm director and make most of the time documentaries, shootings with the camera on my hand. I am thinking about buying a GH4R or maybe wait the GH5 if it resolve some of my doupts. My interrogation is about the Image stabilisation. The absence of I.S into the GH4 is for me a big problem. I understoud the crop and +1 lighting interrest of the speedbooster but, on your video, I am not sure about the I.S aspect: does the speedbooster is an I.S for any kind of lens or does only permit to transmit to the GH4 the I.S of non-native lens ? I suppose it is the second case, it is not very clear.. I would like to use, in my ideal, some vintage and cheap lens (I have some FD canon and FM Minolta) but I am affraid that, inspite of speedbooster my futur shootings shakes a lot without tripode or steadycam. What do you think ? did you made some test with vintage lens + adaptator + speedbooster + GH4 ? One last question: did you made a comparaison beetween Metabones SB and the Zhongyi Lens Turbo ? It is very cheaper and some test show it is not so bad...What is you opinion? Thanks again for your helping involvement !! Greg

[@MaksimYuryev]

I have not tried the Zhongyi, After using a few other cheap "speedboosters" they really sucked so I avoided them. If you have the Canon to M43 Speedbooster it will support I.S. if the lens has it.

[@DenhefDigital]

Hi Max! is that the latest speed booster released today? There is an ULTRA and a speed booster with a "s" on it....confusing.

[@soybrunomarin]

Thanks a lot Max!!! I have one question. In terms of price, would you recommend me to buy the smart adapter (I don't think I'll need that extra stop) but what happens with the FOV? Take care and keep it up!

[@MaksimYuryev]

bruno marin Definitely the Speedbooster (like you already chose) :)

[@mattallen1269]

im trying to understand the difference between the metabones nikon mount and canon mount. is their a significant difference in image quality or is it the exact same? what are the disadvantages of having the nikon mount passive/not active?

[@MaksimYuryev]

Quality is the same but Canon version allows you to control your aperture and have I.S. work if the lens has it. the Nikon version is all manual which is nice to have a de clicked aperture control if you use that, but you don't what exaclty what f stop you're at. If your not invested in any platform, I'd go for the EF Canon version.

[@pangrac1]

Hey Max check out Tom Antosh video where he explains function of micro USB port and wheel dial. It should be for adding power to lens and dialing aperture in case contacts didnt work with body. Dont know at which combination of body and glass this can happen. Anyway thanks for very good explaning video!

[@WantTeaBag]

Was thinking of getting the Canon EF 24-105mm F4 before you mentioned the tamron. hmm I'm stuck now

[@MaksimYuryev]

WantTeaBag I wouldn't as low light is one huge downfall of the GH4 (huge when compared to all its upsides) I would pair it with the Tamron 17-50 (or Sigma for that matter)

[@dr.nkengstephens]

Hi Max, good day, i wish to know why the 17-40mm Ultra Wide Angle Canon EF lens doesn't work properly with this speed booster. we dont get that wide angle we get on the 5Ds

[@Duckstalker1340]

Speedbooster XL will reduce crop factor to 1.28 and Ultra will reduce to 1.42, so the FoV will never be the same of the 5DS in other words, you’d have less FoV with ultra wide lens

[@martinpalmer3575]

Quick Question - Im thinking using the EF Canon 35mm f1.4 & The speedBooster 0.71 on my MFT G7. I already have the Panasonic Leica 25mm f1.4 which is nice. But Based on this calculation Will the Canon & Speedbooster let in more light than my Pana Leica? and ultimately give me even stronger background blur & DOF?

[@Kolicko]

The Tamron 15-50 is a cropped sensor lens right? So does that mean that after getting the magnification (12.07/35.5) Do I have to multiply it by 1.6 to get a full frame equivalent? (19.32 / 56.8)

[@MaksimYuryev]

yes the 17-50 is a cropped sensor lens. The 12-35 is focal length if you're comparing directly to other M43 lenses. You can do the math the long way to figure out each step that I listed, or you can just times the 17-50 by 1.6 to get a full frame equivalent when you're using the speedbooster.

[@nossavidanaamerica]

This is like the 3rd time I come watch this video to learn how to do this little math for my speedbooster... I am so dumb! Thanks again Max... I already favorited this video just in case I forget again hahaha you the Best!

[@MaksimYuryev]

Thanks for watching glad its helpful!

[@silentcraftsman]

@Max Yuryev, I really want to get the Gh5s for its low light, image quality, and the 4K 60p. I am ok with manual focusing and I wanted to solve the lack of image stabilisation by using Tamron G2 lenses that have really great optics and VC. Have you ever encountered anyone who ever used that combination with no issues with the VC?

[@Timm-do4fp]

Superb and very informative video. Just subscribed! Mind if I ask a rather random question... I'm looking to get a wide angle lens for my GH4. I have the metabones EF to MFT speed-booster, I have a Canon EF 50mm, and a canon EF 24-105mm. Do you have any recommendations that would complement my kit? I wonder if I should stick to Canon. I'm not sure. Either way, I need to use it for run & gun documentary work. Would be grateful for any advice!

[@MaksimYuryev]

Hi Tim thanks for subbing. I would highly recommend the Tokina 11-16 F2.8 for use with your speedbooster. amzn.to/1v10q6b . After speedboostig you have a nice sharp and fast lens at F2.0 with an ultrawide angle at 11mm and regular wide at 16mm. Its also internally focusing which is nice if your putting it on a stabilizer. Check out my Nikon G to M43 Speedbooster video there are some example shots using it starting at 7:40 kzbin.info/www/bejne/jafXfoWkerN6m8U

[@Timm-do4fp]

Great! Thanks will look now.

[@FeranoWibisono]

i have a tamron lens 24-70 canon mount, is speed booster works with that lens to the gh4? thanks!

[@keonibaloni]

thanks for the review, is there an adapter that has autofocus as well as aperture control for canon on MFT?

[@melenriquez8985]

I am confused about your conversion. The way I understand it, the speedbooster is supposed to capture the entire FOV of a 35FF lens and focus it to the target size. Yes, one gets a 1 stop improvement because of this. But in terms of image size, I thought that if your 50mm has a FOV of 46 degrees in 35FF sensor, with the speedbooster, it should project that 46 degrees into a smaller sensor. So, once should have that same 46 degrees FOV for the m4/3. It does that for the aps-c speedboosters. I expected the same thing or m4/3. Why do you have to do all that math then? Now, I understand that once you shoot video, especialy 4k, the sensor does crop so that's a given. You won't retain the 46 degrees or 50mm FF POV. You'll lose when the sensor is further cropped shooting video (except maybe in the new GH5). But in photos, the entire m4/3 sensor should receive the the same FOV of any 35FF lens. There shouldn't be any more computations done as you have done. Mind you, I refer to FOV not focal length, because at the end of the day, it's really the FOV. That avoids the focal length conversions and confusion. Please clarify this for me. I know that in the aps-c speedbooster this happens. A 50mm 35FF FOV (eg. 46 degrees), will be focused on the target smaller aps-c sensor and retain that 46 degree FOV. In effect, the aps-c will see the same FOV as a 35FF sensor and since the light is focused into a smaller sensor (reverse tele), the bonus is a 1 stop advantage. Is the speedbooster working differently with m4/3 speedboosters?

[@osujennifer10]

Hi max! Thank you so much for all your help! I have visited your gh4 shooter website and your videos and they are awesome. I have purchased the tamron you recommend 17-50 mm with vc for canon and the canon speedbooster for my gh4 camera. My only concern is that the speedbooster says its only for ef lens mount. And the tamron is a ef -s mount. They fit together but I'm afraid they won't work electronically or with my camera? Hope my question makes sense. Have you actually used this speedbooster and tamron ef-s lens with the gh4? Hope to hear back from you! :)

[@MaksimYuryev]

Glad to be of help! How do you know the Tamron is EF-S mount? I'm not at home so I can't check my box but as far as I know all third party Canon mount lenses are in the EF mount, even the ones for crop sensors. It's to my knowledge that only Canon produces EF-S mount. These are purposely restricted so they can't be used on full frame bodies. I've used the Tamron 17-50 Canon mount on my 5dmark2 before that it worked there was just vignetting. Let me know thanks!

[@osujennifer10]

I bought the lens from bh photo and then saw your channel to do more research. I just looked on the lens and it doesn't sat what mount. It doesn't say on the box either. Bh photo told me it would not work when i called. I'll post a link that says that it is an ef-s mount www.bhphotovideo.com/c/product/652136USA/Tamron_AFB005C700_SP_AF_17_50mm_f_2_8.html It attaches together just fine. I'm afraid though it may not work electronically or with my camera. So I haven't tried and risking maybe ruining the items or warranty on the items. Have you tried the tamron 17-50 canon mount on the gh4 with canon speedbooster? Is the vignetting bad?

[@osujennifer10]

www.bhphotovideo.com/c/product/652136-USA/Tamron_AFB005C700_SP_AF_17_50mm_f_2_8.html The link I posted above doesn't work hoping this one does. Thanks!

[@osujennifer10]

If you look under the "specs" tab it has the mount type. I just read the manual it provided with the tamron lens and it does not say what mount type it is. Haha. So I guess the specs on bh website could be inaccurate I suppose . Just want trying to understand it all :(

[@MaksimYuryev]

osujennifer10 :) yea they probably wrote that to signify that its a crop lens.

[@jessieslezak]

This literally answered every question i had!!! Getting the gh4 with ef metabones ASAP! :):) thanks so much!!

[@MaksimYuryev]

Thanks for watching and subbing!

[@TheRealNickBoyer]

Hey max! Quick question! I understand the speedbooster allows you to control the aperture on the lens, but can you also adjust the shutter speed?

[@MaksimYuryev]

yes!

[@TheRealNickBoyer]

awesome! Looks like I know what my next purchase is! :) Thanks!

[@MyWayProduction1]

what the different about "Canon EF Lens to Micro Four Thirds Speed Booster" and "Canon EF Lens to Micro Four Thirds Speed Booster S" when we use with panasonic gh4 ?

[@MaksimYuryev]

yoy filmmaker For the GH4 not much of a difference. S will work with olympus cameras as well. I think they are discontinuing the non "S" version.

[@xVertygox]

Max Yuryev thank you for the excellent video. i believe i heard correct when you said i can control aperture from the gh4 with my canon lenses, is this true? i was almost ready to sell all my canon lenses, and this video made me realize i can keep them all until i'm able to get better glass. (kit lens, and a few other manual ones.)

[@MaksimYuryev]

Yes you can! And image stabilization works too. I know lots of people who sold canon camera and bought gh4 but kept all they lenses.

[@xVertygox]

Max Yuryev excellent thank you sir !

[@cobblesticks]

Thanks for the explanation good to see the actually maths. Just to understand it correctly - coming from a Canon 650d or 1.6 crop factor.....using a speedbooster with a 28mm or 85mm lens on the GH4, shooting in 4k, would essentially act almost the same as the equivalent 35mm focal length on a 1.6 crop sensor? So with your calculation a 28mm x 0.71 x 2.3 = 45.72mm on the GH4 4K. Where it acts as 45mm (equiv) on 1.6 crop? Basically shooting 4K with speed booster makes lenses act like 1.6 sensor??

[@MaksimYuryev]

Yes exactly! You basically get a Canon crop sensor equivalent when shooting 4k, or even wider than Nikon 1.5 crop when shooting 1080p (about 1.4 crop)

[@crystalchai5388]

Why do they make it 4/3 and not just mirror less full frame? My lenses turn to zoom lens :/

[@allenjam6162]

hi Is there any special setting on gh5 cuz my adapter (XL) doesn't work and i don't know why ?

[@pietfriet1234]

Adapter looks nice. Have one question... I own also the Tokina 11-16 for my nikon d5200 and use it mostly for video. I'm planning to buy the GH4, but since I'm filming on a glidecam autofocus is 'realy' important. But the tokina is realy wide, so is it difficult to keep video in focus on the GH4? Hope to hear from you!

[@MaksimYuryev]

The GH4 has more in focus than an aps-c type sensor and with the lens being so wide at 11mm almost everything is in always in focus. If you stop down a stop or two in the adapter you'll have no issue :)

[@pietfriet1234]

thanks for your response! oke good to hear that it wouldn't be an problem.. But is the distance to infinity depth of field also changing due the cropfactors?

[@MaksimYuryev]

***** Yes if you have a meter on your lens the distances will be off because of crop change.

[@acelive7]

Hi Max Yuryev Thanks for the review! I'm asking this because it's not precised on the metabones official website that all canon EF lenses work with this speed booster. They've tested on a few lenses only. Do u know if it works with all canon EF lenses? Which lenses have u tested yet?

[@MaksimYuryev]

Yes it will work with all EF lenses!

[@acelive7]

Max Yuryev Sweet! Thanks a lot I appreciate it!!

[@noahthecubeguy]

Max Yuryev I just got my Metabones EF-M43 Mount in today for my GH4 and my Canon EF 50mm f/1.4 and Canon EF 15mm f/28 fisheye don't work. I get an error, "Lens attachment failed. Please make sure the lens is attached correctly." So I don't know if I just got a bad copy or what... I tried emailing Metabones because I can't find a phone number but haven't heard anything yet... Do you know of a number for them and also do you know what could possibly be going wrong with this adapter and my Canon glass? My Canon 70-200 f/2.8 works along with my Canon EF 100mm f/2.8 Macro...

[@valladares9045]

Hello Max, great video, i just subscribed , now i understand more about metabones, one question please!!! i have a Canon EF 25 - 105 and i want to know how mm will have on a gh4 with the Metaboone Speed Buster. Tell me if i am wrong please. 25 x 0.71 = 17.75 (x 2.3 = 40.8 [4K] 105 x 0.71= 74.55 (x2.3 = 171.4 [4K] So , mi canon lens 25 - 105 will be with the metaboone a 40 - 171 mm ????? PLEASE SOME HELP

[@nicka4540]

I'm pretty sure your calculation of metabones crop reduction is wrong - about 15min into video. Adaptor reduces the crop but doesn't reduce it beyond the original mm of the lens. So if the normal crop on four thirds camera is x 2 the 11mm would have field of view of 22mm and the metabones would reduce that by .71 to 15.62mm. Similarly 16mm crop factor would result in 32mm field of view with adapter bringing it back to 22.72mm. so your 11-16mm zoom in micro four thirds would have field of view of 22-32mm without adapter and 15.62-22.72mm with adapter.

[@MaksimYuryev]

Were getting the same outcome but you're achieving your number with a different formula. You're putting your sensor crop in first then the speedbooster 0.71 value, I'm doing the 0.71 to the lens first then introducing either the 2.0 1080 crop or 2.3 4k crop. Check out 15:31 where I circled the outcomes, 15.62mm-22.72mm for 1080P just as you stated and 17.96mm-26.12mm for 4k :)

[@ronisilvaraibaudi5110]

hi. sorry. i know, is a old video, but i have a question. if i have a canon 24/105 and i put the lens on this camera(gh4), which is the final crop?

[@AirOnJohnson]

so you put that it is a 12.07-35.5 on the tamron lens (originally 17-50mm) but wouldnt it be 25.4-71 (if you filmed in 1080p)? i guess im not grasping which one it is because this makes a HUGE difference to me as far as what lens im getting. Along with that i was about to buy the gh4 along with the Nokia speed booster until i saw this video. Now that i've seen this video and since i have a canon t3i it would probably be a better option to get the ES speedbooster and use the lenses i have right? I have a tamron 10-24 f 3.5-4.5, canon EF 50mm 1.8, and a canon EFS 55-250mm F4.0-5.6. Im thinking of dropping the Tamron and getting the tamron you were suggesting since i do weddings like you and work in low light but i just need to make sure that this crop factor will give me something similair to the lens i use on my T3i. Just let me know what you would do in your situation. Also I AM USING ALL YOUR LINKS TO BUY MY STUFF because of how helpful you have been through this whole process. THanks a TON MAX!

[@MaksimYuryev]

Hi AirOn Johnson! Thanks for using my links! Really helps me :) Using that Tamron lens on a Canon crop body you won't be seeing a 17-50mm view because you still have to factor in the T3i's aps-c sensor crop ratio which is 1.6x. So on your T3i the 17-50 F2.8 lens will give you a field of view of 27.2mm-80mm (in full frame equiv) If you're using this lens shooting 4k on the GH4 you will have 27.76mm-81.65mm (in full frame eqiv) so with the EF speedbooster your field of view (in 4k mode) is very close to what you have with a Canon crop sensor. If you're shooting in 1080P your Canon lenses will be slightly wider than what they look like on your T3i. If you want to compare lenses between different sensor sizes make sure you factor in the different sensors crop amount and compare when you have them converted to full frame ratios or it gets super confusing. The Tamron (or Sigma) 17-50 F2.8 will be perfect for weddings, Most of the lenses you have will work with the SB. The only thing is the Metabones EF TO M43 speedbooster does not support Canon EF-S lenses so you'd need to sell your 55-250 lens and replace it with sometime else. As far as I've understood from doing as much reading as possible Canon crop sensor lenses don't work (EF-S) but crop sensor lenses from the other brands still use the EF mount and do work! I've used many Canon crop sensor cameras for video and the GH4 is a huge step up as far a image quality and noise. I hope that's been helpful, Let me know if that didn't help and I'll do my best!

[@AirOnJohnson]

Max Yuryev okay yeah it's a little confusing because i'm thinking purely in comparison to my T3i because that is all i have ever used so that's all i know. That does make more sense for sure though although I'll probably look up some videos on that to get a little clearer understanding. But that is super rad that it will give me a little bit wider view with the lenses i have. I'll just have to get another adapter so i can have those 2 lenses i have zoomed in a little further (although i will lose that one stop of light) its nice to have that flexibility. All of this is super interesting to me and im so pumped on the videos you make. thanks for all your hard work! all i need to do is click on your links and just hit add to cart and you'll get credit right? do you have a link i can click on for the tamron lens?

[@MaksimYuryev]

AirOn Johnson Basically if you are using Canon lenses with a speedbooster in 4k mode the lenses will look the same as your T3i. If your using 1080P mode they will be just a bit wider :) You can actually click on any of the Amazon links and the find whatever you are looking for and add to cart. As long as you checkout within 1 day of clicking the link I get the credit. (or you can bookmark the support link and use that to get to Amazon) Thanks so much!

[@johannaranjo1564]

thanks a lot for the review.... very helpful.... it's possible use the function pikin focus with this adapter? thanks again

[@MaksimYuryev]

+johan naranjo Yes :)

[@jamesroddy1843]

Max, I'm trying to find this Metabones but no store carries them, not even the Metabones site.. The link you sent tells me it has to be ordered and I have to wait till they get it in stock. B and H has a waiting period too, and Samy's Camera just doesn't have it. Where can I get one of these if I want it now? I'm shooting a short on my GH4 in 3 weeks and I really need this to showcase the new set of Leica r lenses I bought.

[@MaksimYuryev]

Yes they are in really short supply. If you're serious about getting one even if you miss the 3 week mark I would order it from Adorama. They won't charge you until it ships, and if you buy one before hand you can cancel the order. If you don't get you your place in line will be there. Then I would go and search speedbooster forums online, and also try to find any speedbooster groups. PM me your email and I'll send you an invite to a private Speedbooster group on facebook. I would ask in those places, maybe someone has an EF speedbooster that they are willing to sell.

[@AlexPower]

Hey Max, thanks for the effort . I personally prefer a micro four thirds native lenses, thanks again.

[@SkylineMMedia]

thanks for the video!! Helped me understand the speed booster a lot more! Thank you!

[@filip1727]

But Max these two examples is of to APS-C lenses! Aren't you supposed to divide by 1.6 to get the right full frame equivalents? And after that do the math that you did? Or am I thinking completely wrong? Because if you take a full frame for example 16-35 F4 and calculate the focal length and then compare the 16 in the tokina (11-16) and the 16 in the canon (16-35) the 16 wouldn't look the same? Because the tokina is an APS-C and the canon is an full frame?

[@MaksimYuryev]

I know what you're saying, and yes that is the case if you want to exact match the look of a full frame. here i'm comparing to buying native lenses for the M43 system.

[@filip1727]

Oh great thank you. Thinking about bying a GH4 with a metabones adapter (EF - no speedboater). Now i have a Sigma 17-50 2.8 and I'm thinking about getting some more lenses both wider and more narrow. Do you have any suggestions?

[@JePeVePe]

does your IS stays 'on' also all the time?

[@alegidi2039]

Max do you try the metabones Mark V for the a6500 i just bought the a6500 and for your review i bought the 50mm 1.4 zeiss (vs the rokinon) but i have the 18-35 1.8 sigma and i dont know if the News metabones works better than mc-11 and i dont find a review on KZbin

[@vsar1938]

Keep doing these videos please! These are very helpful! Subscribed.

[@MaksimYuryev]

Will do!

[@LuckyBraxton]

Do you know if ef-s kit lenses will work with the speedbooster? I can only afford the gh4 with the speedboster. But I only have a Tokina 11-16 and a 50 1.8 would love to get the sigma 17-50 with it but not in the budget. Thanks.

[@MaksimYuryev]

Only Canon makes EF-S lenses. If its another brand lens made for "Crop sensors" Like the Tokina 11-16 its still an EF mount. So any third party crop lenses will work and Canon's full frame will work. The 50mm 1.8 is a full frame Canon lens so it's an EF. =)

[@EugeneYunak]

Max Yuryev you are wrong, the excellent sigma 8-16 is ef-s

[@davidmink8868]

Hi do you get autofocus for video recording with the GH4 as nearly all the videos on KZbin they use the GH4 to test this adapter but mention nothing about autofocus for video work being that GH4 is mainly used for it's video capabilities ?

[@MaksimYuryev]

+david mink With the latest adapters yes, when it was launched no.

[@patrickcazer]

on crop its 1.1x crop but on m43 what would it be ? 1.5x crop ? or 1.3x

[@yankeetronaldo4286]

What is the difference between metabones adapter & speedbooster ? what should i buy adapter or speedbooster ?

[@minuteswithdave]

+Yankeet ronaldo the speedbooster adds a stop of light, and makes your field of view larger. while the adapter simply adapts the lens to the mft lens mount.

[@JeanV1986]

Ok, using a Tamron 17-50 instead of the Panny 12-35 looks nice on paper. But what about focus speed and accuracy? And optical qualities? The speedbooster certainly deteriorates IQ in some ways. There's much more to a lens than just aperture and range.

[@MaksimYuryev]

You are correct! there is much more! I'm hoping to have a 12-35 again soon so I'll do some testing to my tamron. As for autofucus speed and accuracy the speedboosters don't support autofucus so if you need it for photo then it's not for you. if you don't need better low light performance then stick with native lenses.

[@MaksimYuryev]

if you want better low light performance and the ability to use great lenses in other mounts like the 11-16 2.8 and don't need autofocus then its a great choice

[@Vibeck99]

Hi Max ! Should i get a Metabones speed booster for my GH4 and start investing on Canon lenses or stick to panasonic lenses. I currently have a 12-35 f2.8 and was planning to buy 35-100 f2.8 soon. What should i do ? Thanks !!

[@MaksimYuryev]

If you need better low light than your getting with the 12-35 2.8 then yes. If your ok with the low light of the F2.8 M43 lenses I would stick with those!

[@Spencer635]

I'm in the same position, I got my gh4 and the olympus 12-40 and trying to figure adapting lenses verse m4/3 native. I feel that not only on top of an extra stop of light and the wider .71 focal range you get, if you wanna get an as7 down the line or a canon camera you'll already have the glass. I like having 1 or 2 panasonic lenses to keep auto focus for taking pictures but canon and sigma fast glass with a speedbooster sounds amazing. I think I'm going to get an olympus 45 f1.8 and pick up a speedbooster when I can afford it.

[@MaksimYuryev]

Spencer Moret I agree with what you said I think thats a great way to do it!

[@Billy_Plantilla]

Can I use it with BlackMagic's Studio Camera 4K?

[@lovesvensson]

the aperture have to be multiplied by the crop factor also m8

[@AllAboutTechnologies]

sir, I make video reviews of products like smartphones and i am looking forward to buy GH4 and i have around $2500 so what should i do? which lens should i buy and which adapter should i buy? I have seen all your videos but the thing is i have never used a DSLR before so from what mm to what mm lens should i buy and will no AF on metabones affect me? PLEASE HELP! Thank You :)

[@MaksimYuryev]

AllAboutTechnologies For what you do I'd get something like the GH4 with a 12-35 2.8 Lens.

[@AllAboutTechnologies]

so i should go for GH4 with kit lens?

[@labalbi]

AllAboutTechnologies The 12-35 is no ordinary kit lens !

[@waipahutube]

Hey how's the autofocus with the speed booster? Does the metabooster increase magnification (70-200) on H4 with the metabones is equal to what range?

[@MaksimYuryev]

No autofocus (maybe in future with an update) 70-200 on GH4 with speedbooster in 4k shooting mode is 114mm-326.6mm when comparing field of view to full frame.

[@MementoMori_5]

When setting the F-Stop on the speed booster, does it have to be the same as the F-Stop on the camera?

[@MaksimYuryev]

For the EF speedbooster you set it in camera like you usually do. When using the Nikon G to m43 one you set in on the speedbooster itself. The camera will read "0"

[@MementoMori_5]

Gotcha, thanks!

[@kaijan2808]

Hi Max, hope you can help. I am interested in the Panasonic GH5, but coming from Nikon APS-C, I would like to keep on using my Nikon/ Sigma lenses. Now, if I understood right, only Canon lenses are fully able to communicate with the Metabone, but not the Nikon lenses, when it comes to autofocus, aperture etc. Can you confirm this? Otherwise I probably need to go for a D500 although the video mode does not convince me at all. Cheers,

[@MaksimYuryev]

+Kai Ja I think there is a new adapter (forgot the brand) that allows it to communicate and AF as well. Search for it and you'll find!

[@yodaheabebe3756]

Hey Max, quick question. I know it's been a while since you made this video but please give me another example of a bargain lens (Like the Tamron 17-50) for the Panasonic 35-100...

[@MaksimYuryev]

Yodahe Abebe if your going to use it with a speed booster than amzn.to/2hMbVyc but if not you might as well just go for the 35-100 since the price has gone down and it's much smaller/lighter.

[@cinelrb]

hello how can i set up Canon lens on Metabones Speed Booster auto focus for video mode thanks

[@john3Lee]

+Cine Lrb I just bought this unit to go on bump, the focus button does not work in the same way as olympus lenses. However, focus peeking does help to find focus... i hope that helps..

[@davidgoya7157]

Brilliant explanation video, Max :-) :-) :-)

[@CambodianAmerican]

Thanks for the explanation. I'm gonna get that speed booster. :))

[@felipevece]

Does the autofocus Work with the speedbuster?

[@geoffreyfake123]

I have a question, and I really thank you in advance if you can help me with it I've seen a video shoot with GH4 plus Metabones speedbooster MB_SPEF-M43-BM1and Sigma 18-35mm f1.8 my problem is that such Speedbooster is discontinued, so each one replace that old one ? there is a few but I am lost to be honest Thank you very much

[@MaksimYuryev]

+Geoffrey Fake If you mainly shoot 4k video I'd get this one: amzn.to/23hktxW or if you shoot photos or 1080P get this one: amzn.to/21oiaK7

[@armandofigo]

+Max Yuryev will be mostly on 4K thank you soo much.

[@colinbrady85]

Hi Max, do you think it is worth buying the Speedbooster if you are using fast T1.5 Rokinon EF mount lenses with manual aperture? Or is it better to get a cheap adapter with these lenses?

[@MaksimYuryev]

Which T1.5 lenses? With a cheap adapter you have a 2.3 crop in 4k so your semi wide 35mm becomes a 80.5mm and if you have their 85mm it becomes a 195mm . With a speed booster that helps the 35mm becomes a 57mm and the 85mm becomes a 138mm much more usable. Plus if you get the spew poster you have that 1 stop of light gain and you can still get a cheap adapter and have 2 lenses in 1 effectively (as far as FOV) I say go with speed booster if you don't want that crazy crop and can afford it. If you don't mine the FOV of those lenses after the crop then go for the cheap one :)

[@MaksimYuryev]

And if u get speed booster you'll want to buy a 11-16 2.8 :) so keep that in mind lol

[@colinbrady85]

Max Yuryev thanks! I'm looking forward to buying the gh4 now. Goodbye canon (except I'll keep your lenses)!

[@MaksimYuryev]

Yup! :)

[@colinbrady85]

Hi Max, I was just reading up on using manual lenses (like Rokinon and Samyang lenses) with the Speedbooster. MetabonesMetabones warns that some MF lenses can harm it. Have you had any issues?

[@CelosTelevision]

My speedboats isn't tight on my GH4 is that with everybody? is that normal? like it wiggles a slight bit

[@MaksimYuryev]

contact metabones for a free back plate

[@CelosTelevision]

Max Yuryev DO they have a number? All I see is a email

[@MaksimYuryev]

Send email and they will get back to you.

[@winchman]

Yes, very helpful! Thank You.

[@glitchtrixman]

Thanks man, I needed this review

[@MaksimYuryev]

Thanks!

[@benceccato]

Is it true about no autofocus?

[@rangacricket1138]

Hey Max, thanks for the wonderful review. I have a gh4 and would like to know if you get a chance to use sigma(or tamron) 17-50 f2.8 canon lens on the EF speedbooster. I am afraid it may vignette at wide apertures. I wrote to metabones but they could not confirm. greatly appreciate your thoughts on that.

[@MaksimYuryev]

Hey Ranga, I probably won't have a chance to test it unless I sell my Nikon Speedboosters and lenses and go for Canon, but I am 99% sure they will work because when Sigma or Tamron (and others) design a lens they just make one lens and make sure it covers the 1.5 crop of the Nikon and use the same lens with a different mount for Canon which is a 1.6 crop. The EF to M43 Speedbooster is still widens your image by 0.71 like the Nikon version does so it should work just as well. My Nikon mount Tamron 17-50 2.8 works great!

[@rangacricket1138]

Max Yuryev Hey..thanks a lot for the reply. does your nikon version vignette at 17mm end? I was just wondering as metabones makes gh4 a 1.4 crop, and sigma tamron are 1.5/6 crop lenses.

[@MaksimYuryev]

Here are some photos for you Ranga, Just simple ones I took in photo mode both at 17mm and 50mm. There is 3 of each (4:3, 3:2, and 16:9) there is visible vignetting at 4:3 but most people dont use that mode. a little in 3:2 and none that I noticed (I did this quick) in 16:9 mode. The 16:9 samples would represent shooting in 1080P mode, but when your shooting 4k its cropped in even more! hope that helps! drive.google.com/folderview?id=0B2e7zCjsmvx_Q3ZsYTdWZnR4cVE&usp=sharing

[@rangacricket1138]

Max Yuryev awesome..thanks. I like crop sensor options for speebbooster than the full frame options both in terms of range and f stops.

[@rangacricket1138]

Max Yuryev really appreciate you taking time to reply and send samples..

[@elijah_tech]

Does autofocus work with the speed booster when filming video?

[@MaksimYuryev]

+Elijah Tech It depends on the lens. It can work but it will be slower than with a native lens.

[@miramezjr]

hi! i need a metabones speed booster for my canon 70d. I want my canon 70d to looks like a full frame, not aps-c. is there any metabones version for aps-c canon using both canons lens and others brands?

[@Kyzox2000]

+Ranez Gurubhai Metabones works only for mirrorless cameras.

[@junioraristide8862]

Does anyone know if there is a speedbooster for native m43 lens? (m43 to m43)

[@VISUALMEDIAEC]

Hi Max, thanks for the video, could you please give me you the link of the Tamron lens? ... I have a panasonic GH4 and was about to buy a Panasonic 12-35 lens ... you recommend? greetings from Ecuador ...

[@MaksimYuryev]

Thanks for watching! Here it is! amzn.to/1r5BAA8

[@VISUALMEDIAEC]

Max Yuryev sorry I have another question, Which of these lenses is best for my GH4? 17-50mm tamron 2.8 or 2.8 SIGMA 17-50mm ... These lenses bear the image stabilization, with metabones samples in the video? ... or think is better to buy the lens panasonic 12-35mm? please ... get me out of this big question

[@RussianRider]

VISUAL MEDIA films if you shoot in lots of lownlight then speedboosted. It you Dont shoot in loan light and want to have a smaller lens then 12-35 2.8 . I would get the tamron version

[@VISUALMEDIAEC]

Russian Rider thanks, the sigma 17-50mm an tamron 17-50mm are similar lenses?

[@MaksimYuryev]

VISUAL MEDIA films Yes they are very similar but the zoom is smoother with the Tamron.

[@TheV1S]

Hi, Would I be able to mount fd lenses with an ef/eos adapter on the speedbooster?

[@MaksimYuryev]

I'd look if you can find a FD to M43 speedbooster. They used to make them maybe you'll find one on Amazon. If not you can try to get the EF version like in this video and a FD TO FE adapter on Amazon. (not sure if it will work but you can try it)

[@camcretney]

Hey max quick question if you could help me out. I want to get a gh4 or g7 possibly and the sigma 18-35. Which metabones speedbooster is compatible? I have all canon glass atm. I'm just not sure if the sigma will work with the adapter since its for Aps-c camera. Will there be any vignetting , any possible help would be great :)

[@MaksimYuryev]

Will work great, just make sure to get the regular speedbooster or ultra model not the XL.

[@camcretney]

Great! Thanks for the help man, keep it up with the videos!

[@CyberMarre]

+Max Yuryev "You say not XL" that is because the vignetting in photos. Nothing else right?

[@MaksimYuryev]

+CyberMarre Because the XL is meant for full frame lenses, where the 18-35 Sigma is a crop lens.

[@camcretney]

So would I have to get 2 adapters if I wanted to use crop lenses and full frame?

[@peterjohn428]

Anyone know if the Canon EFS 17-55 has vignetting or not when used for photos with the speedbooster? .71x speedbooster specifically. thx

[@notcorrect]

It wont at all with the 0.71x. With the 0.64x it will in photo mode.

[@camsvisualmedia7638]

Does this work work the g7 also does auto focus work

[@fbarrabino]

Hi Max, any information about wether the speedboster xl will work just fine with the gh5?

[@MaksimYuryev]

It should work, but the question is if it will vignette. We don't know yet until someone tests it.

[@fbarrabino]

Hope to see those tests soon! Thanks.

[@Frigdogg]

Does the Canon EF - M43 work with the Sigma 18-35mm?

[@MaksimYuryev]

Yes! Great Combo.

[@Frigdogg]

Max Yuryev Awesome! Thanks. And thank you for the great review!

[@PeglegMediaX]

i think i may have to start selling my panasonic lenses :( and my gh3 for a 70d so i can finally get some good photography done and still have my gh4 for video.

[@MaksimYuryev]

That sounds like a decent plan honestly! Or maybe a 6d? :)

[@PeglegMediaX]

my coworker has the 6d, looks beautiful. But thats another $500 or so and has less video features. Do you know if the sigma 18-35 1.8 works with the 6d?

[@MaksimYuryev]

PegLeg Mediax no the Sigma is only for crop sensors. GH4 and 70d with shared lenses would be sweet :)

[@junta00]

why do you not like the gh4 for photography? simply because of the smaller sensor or are there other reasons? I shoot primarily photo on a gx7 and love the crop factor that m43 gives, allowing super telephoto at an affordable price point

[@PeglegMediaX]

junta00 just have got better results with the t3i and $100 50mm prime lens. Better shallow depth of field, the people pop more, better in low light, higher megapixels for cropping in... The main problem with my gh4 is i can't get it to focus on a persons eye in auto focus, almost impossible so i can't even use it around the house for family events

[@ValladaoMateus]

is there a speedbooster that makes micro 4/3 have a full frame sensor field of view???

[@MaksimYuryev]

+CallmeMat No, basically impossible because of flange distance.

[@ValladaoMateus]

What's the "biggest" it can get? Super 35mm?

[@Dezdirectz]

Matvall Yes

[@tomaltman9506]

Where are you finding tamaron 17-50 ef vr for $350?

[@MaksimYuryev]

Used section of Amazon, here's a link amzn.to/1rWnNla

[@MaksimYuryev]

The Sigma is also a good option amzn.to/1rWnUgA

[@XNeeComps]

Does the Sgima 18-35 with Canon Mount work for this??

[@MaksimYuryev]

Yes would work fantastic! :)

[@XNeeComps]

Max Yuryev perfect! just making sure because Metabones said it wouldn't work for EF-S lenses...

[@MaksimYuryev]

Nikko Ocampo As far as I know only Canon uses the EF-S mount. Rokinon, Tamron, Tokina, Sigma, & others use the EF mount even on their crop sensors so you should be golden!

[@XNeeComps]

Awesome!! :D

[@effectivemedia2963]

Thank you. Very informative.

[@MaksimYuryev]

Thanks for watching and subbing!