35mm (Full Frame) / APS-C Dilemma | Describing Focal Lengths on Cropped Sensors | Opinion Piece

#35mm #APSC #Fullframe
What does '35mm equivalent' mean?
Or is simply saying 'cropped sensor' good enough?
00:10 Shooting this episode on the 300 PF
00:44 Intro on today’s episode
01:10 When did I start using the APSC?
02:54 APSC controversy
03:33 Introducing the 50mm 1.8 Viltrox
03:52 Introducing the ZFC + Z7
04:10 Showing the difference between APSC and 35mm
05:09 Many mirrorless systems allow for different sensor sizes, yet use same lenses on either sensor size
05:33 What is a 50mm lens?
06:00 What happens to a lens when it is on APSC?
06:40 How should we convey effective focal length on APSC sensors?
07:20 What is the angle of view?
07:41 What does online have to say about it?
08:31 Why do we say 35mm equivalent?
09:47 What about when you APSC crop a full frame camera?
10:25 Is in camera cropping your camera ok?
12:23 Is it semantics?
13:04 How should we communicate our lenses focal length when cropped?
14:14 Can 35mm based definitions be the standard?
14:48 Outro
15:18 Teaser for the lates 400mm f2.8 VR TC S lens video
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[@MichaelAres]

I’m a professional photographer, I already know this, why am I watching this still?

[@babiem2290]

Thank you this is the easiest explanation about photography for someone that is just trying to figure out what a camera can do; researching what’s best for them when trying to buy one. This is great. I appreciated that you acknowledged the language as not being formal, I was getting very confused.

[@kellysparks2084]

Excellent!! I would add that you also need to multiply the aperture by 1.5 as well. So a 50mm 1.8 is an equivalent to a 75mm 2.7 lens on a crop body. (In terms of blur/bokeh)

[@davidhatton2321]

Good presentation, Matt. As indicated by an earlier response, the confusion with so many people is getting "more reach" with a cropped sensor is a replacement for more glass. There are many "professionals" that still don't understand that they are only actually magnifying pixels.

[@steenandresen6522]

Once again. A very good video from 'down under'. Always a pleasure. What I would like is a video explaining pros and cons with full frame vs. DX.

[@carlmarch603]

Matt - I didn't know this was an issue, and I'm sorry you're having to deal with it. Even though I have my Z9 now and throwing it into DX mode for reach is programmed in my i menu, I can't bring myself to part with my D500. My 500PF sits on it most of the time, but also the 300PF, 180-400 and 70-200. It's keeping me from getting rid of all that F mount glass! Trade-in value for a D500 is only ~$650 or so. It's value to me as a wildlife guy is much greater than that!

[@garymc8956]

Great explanations. Leading to several follow up discussions; the affect of crop/full frame on image qualities such as depth of field, bokeh, etc. I would like to see side by side images of a fifty lens on crop camera and seventy-five on full and comparison. Secondly, follow up on lens issues. The fact that full frame lenses provide a 35mm image, it’s just that the smaller sensor only picks up part of it. Crop frame lenses can be made smaller and cheaper because they only have to provide a smaller image. And there are certain implications of this. So I think it’s a great discussion, worth a little more. Thanks.

[@Altitude2011]

Hi Matt, I own the Nikon 300 mm PF. This is an amazing lens. Lightweight, small and very sharp. Look forward to your video on this unique lens!

[@dance2jam]

Hey Matt, I am sure there are many who appreciate you going over this in some detail. Nice job. Quick aside: Most people when explaining the difference between APSC/FF stick to the focal length, but neglect the relative change applies to the aperture as well (does it not?). i.e. a f/2 FX lens has the "equivalent" DOF of f/3 on a Nikon DX body. Now I might have found it interesting to hear the comparison of between images of, for example, a 35mm FF lens on a DX body vs the same lens on a FF body in DX mode. Curious if there would be any noticeable changes. Never thought of doing that myself just for fun.

[@jpdj2715]

Nice lecture. If you like to do these, I suggest to follow up with "focal length is defined at infinity focus setting" (for lenses with a fixed element arrangement).

[@roccop33437]

Matt, excellent job as always .... I use my little N1 as a walk around camera and love it. Then there is my DX, and my FX. At a given price point I would always go with the larger sensor but there are advantages for different formats. Example: My N1 is a great street shooter. Looks like a toy, feels like a toy, but give some great results. Put an adapter on it and learn how to multiply by 2.7 for all my older F mount lenses. I know you have one as well from when I saw your bird safari.

[@archivephoto]

Hi Matt. It surprises me that so many photographers have a hard time grasping the "equivalent" concept. Another way to explain it (for those that are still a little confused about it) is the way large format film photographers have understood it since the beginning of photography, which is, that to get the same horizontal angle of view (from the left-most object in your scene to the right-most object) with different format cameras (4x5, 5x7, 8x10, etc), you need a different focal length lens for each format.

[@enricomarconi8358]

It's a good piece Matt, I would go on delving into the aperture issue though. We do know that the aperture does not change but due to the change of Focal Length perceived, the distance to the subject will be affected hence the Depth of Field (DoF) will also change accordingly. This will result in less bokeh as the distance to the subject will be different in order to obtain the same 70mm 'effect' on a DX camera and by getting further away from your subject, it will result in less blur (or bokeh). It would be like having a 70mm f/2.7 on a 35 mm FF sensor (despite the fact that the max aperture will still be mechanically at 1.8). The same will have to apply for Medium Format but in this case it will be a crop of 0.78 or 0.70 depending on the sensor's size (since they are not all the same) and same would apply to Medium Format Aperture conversions.

[@rustywendlandt5160]

I have a d5600 and z7 so I got it figured out a couple years ago. I wish there was a video like this when I went from film to the D5600. It took quite a bit of figuring it out.

[@MysticApertureStudios]

I recently got a 35mm f1.4 and i absolutely love it. I use it on my Z6 and i often find myself using it in DX crop mode when i am shooting headshots with it. The DX mode gets rid of the extreme corners that have most of the distortion. Instead of a 50mm i find 85mm more useful. That's my personal choice.

[@Joseph-iu6ip]

I have both DX and FX cameras and lenses, so I understood the assignment. 😂

[@dicekolev5360]

Hey Matt! This video popped up right when I'm thinking if I should get 1.4TC for the z 100-400S or to get Zfc and use it with the 100-400mm when on a hike while having another Z prime on the z6ii. Sounds like an exsiting combo ;D. Zfc AF doesn't seems to be worse than the one in z6ii + I'm not afraid of the noise, hmmmm.

[@victormultanen1981]

very interesting topic to discuss though

[@cmichaelhaugh8517]

Now let’s talk about the aperture shift with APSC.

[@okaro6595]

In the film era cameras with smaller film sizes typically had a fixed lens with fixed focal length so you got what you got and the user did not think about focal lengths. Canon did have one APS film SLR which had crop factor 1.44. Also 40 years ago Pentax had an SLR that used the tiny 110-format film cassette (crop factor 2) but it used its own special lenses, not the K-mount. That means crop factor really was not an issue back then.