Common Log Grading Mistakes & How to Avoid Them

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Gerald Undone

Gerald Undone

Күн бұрын

Пікірлер: 887
@samolive2528
@samolive2528 4 жыл бұрын
Hi, I'm Gerald Undone and I'm two stops happier today.
@tribelive9025
@tribelive9025 4 жыл бұрын
okay thats gold
@cameraconspiracies
@cameraconspiracies 4 жыл бұрын
Lawnmower guy lowered the greens too much. I'll leave.
@MountainBoy99
@MountainBoy99 4 жыл бұрын
Nothing like a good demon LUT!
@andreriise2304
@andreriise2304 4 жыл бұрын
😂😂😂
@florianropers
@florianropers 4 жыл бұрын
You came to mind when Gerald was talking about the red tones in the beginning :D
@sfusiondj
@sfusiondj 4 жыл бұрын
Hahaha good one
@omrigoldenzeil
@omrigoldenzeil 4 жыл бұрын
I would like to extend my gratitude to Gerald's mother. Thank you for bringing your son into this world and raising him to be the wonderful person that he is!
@aldoq.5801
@aldoq.5801 7 ай бұрын
Not just the mother but also the father 😂
@GetUpTo88
@GetUpTo88 4 жыл бұрын
Hi Gerald, just so you're aware "middle grey" for Rec.709 is defined in the ITU-R BT.709 spec as 40.9% - this is why slog3 has you target 41% and their Rec.709 LUT keeps middle grey there as it is technically correct for Rec.709 (so not the "50%" you seem to target in this video). There are other things including the usage of the term "linear" in this context that may confuse newcomers, but overall good attempt to help that audience learn. - Hook (Blackmagic Design)
@gregsullivan7408
@gregsullivan7408 7 ай бұрын
Yes, I'm confused about "linear" - linear in a perceptually uniform encoding, or linear light intensity? Edit: I have some understanding now - log encoding is a simple form of data compression, and it's basically the same type of dynamic range bit depth "companding" that's been used for computer displays & image encoding for decades. It appears that for video, log recording is a relatively simple dynamic range companding, that broadly encodes in a perceptually uniform manner, and omits the subsequent stages of image "enhancement" - the enhancement is left up to the user, and that's referred to as "grading". I assume that the reason we need different log encoding codecs is because, being an imperfect ("lossy") encoding, different codecs will be more appropriate for different material & intended viewing devices & conditions. For even more flexibility, that's why we have the option to record fully raw video.
@jerryboy0422
@jerryboy0422 4 жыл бұрын
This was EXTREMELY helpful. When you said “why does my video suck after adding just contrast and saturation” I was like “lol thats me”. Thanks again and hope to see more videos geared towards beginners :)
@pedromeditsch8612
@pedromeditsch8612 4 жыл бұрын
Absolutely, lol that's me too! HAHAHAA
@AllThingsFilm1
@AllThingsFilm1 4 жыл бұрын
This should be the "Intro" video to every color grading course. In less than a half hour, you clearly explain what's important to starting a grade and where to take it from there. Thanks so much.
@dominey
@dominey 4 жыл бұрын
This video is more than how to handle LOG. It’s an explanation for why using the Tone Curve is always more nuanced than using Contrast sliders. Entirely applicable to photography as well.
@flcrn
@flcrn 4 жыл бұрын
@Gerald: Since you're working in Resolve, it would be good to also mention its "Color Space Transform" function (which can be either globally applied in the project settings or applied as an effect to a node). It does all that a LUT or ACES DIT can do and more, i.e. translating most common log formats into the most common color spaces like Rec709, sRGB, Rec2020 etc. But even more importantly, it can apply Tone Mapping to automatically correct exposure and avoid clipping of under- or overexposed Log-material during the transformation. It also features gamut mapping to make colors that are outside the range of the target color space fit that color space without bleeding out. On top of that, since it acts as a mathematical function while a LUT just a color allocation table (that in most cases reduces color resolution), "Color Space Transform" is non-destructive. As a result, contrast boosts done after "Color Space Transform" are much less likely to result in clipping or color banding than contrast boosts done after a LUT.
@facundocordara3258
@facundocordara3258 4 жыл бұрын
Ah, i see you're a man of culture as well
@Roadgrit123
@Roadgrit123 4 жыл бұрын
Florian Cramer This is a very good point, and also worth mentioning that it is becoming the standard for delivering projects to companies like Netflix. Using Colour Space Transforms is a very good way of delivering multiple deliverables for example a HDR Rec 2020 PQ and an SDR Rec. 1886 2.4 gamma whilst using the same standard. The problem with the described workflow in this video is that you have to essentially regrade for any deliverable you do. Software like Resolve and the lesser known Baselight are perfect examples of professional tools which provide the ability to do exactly this. By using colour space transforms you allows for the ability to grade in an abstracted sense where all of your corrections are applied before the “tone curve” in a colourspace which is the same size if not larger than the original capture gamut. @Gerald it would be good to see a video on ACES/RED IPP2/ARRI ALF type workflows.
@JeremiahBostwick
@JeremiahBostwick 3 жыл бұрын
My big issue is that I’m using a camera that is unsupported by CST. I would definitely still like work arounds for this as a result.
@flcrn
@flcrn 3 жыл бұрын
@@JeremiahBostwick Which camera do you use?
@JeremiahBostwick
@JeremiahBostwick 3 жыл бұрын
@@flcrn Z Cam E2-F6.
@SupreetMobile
@SupreetMobile 4 жыл бұрын
"I'm Gerald Undone and my beginner level is your expert level." Thank you for these detailed color grading videos!
@EposVox
@EposVox 4 жыл бұрын
I learned way too much from this
@tedsword5432
@tedsword5432 4 жыл бұрын
It's very difficult to find people (KZbinrs especially) who really know -from a technical standpoint- what they are talking about and are actually technically competent, considering most only give generic and basic information to try and sell tremendous LUTS. I think it's safe to say your videos are contributing to school a new generation of more competent videographers. Thank you. ❤️
@thehiddenchannel636
@thehiddenchannel636 4 жыл бұрын
I’d really enjoy seeing you apply this to actual footage. There can sometimes be a disconnect when charts are used exclusively.
@pcofranc
@pcofranc 4 жыл бұрын
Minor tweaks are not that noticeable (esp on 8-bit monitors) and then it becomes opinion - the colors look "good enough to me" or I think LUT #1 is better than LUT #3 maybe like flying a plane in fog or at night - you are flying off the instruments your maintaining altitude and avoiding objects not necessarily flying the most efficient route or providing the smoothest ride and definitely avoiding flying by site or feel. GU's dashboard just shows where things are supposed to be regardless of whether it "matters". Take cam A and cam B and match their colors... ok here's the results. Finally, on KZbin there's no shortage of color grading 'Fails' to make a "how not to grade" guide.
@ManleyReviews
@ManleyReviews 4 жыл бұрын
This is the video I've been waiting for you to make. Picked up a 6400 just to piss around with log and hlg.
@GuillaumeN
@GuillaumeN 4 жыл бұрын
That's very informative and i wouldn't listen to anyone but you for such technical topics, however i would have loved a "real life" demonstration just so we can see how all this applies on, let's say...outdoor lit skin etc. I understand that those color patch are essentially doing the job and every situation and shot are different but..i think a real life demonstration would have been a good help. Thanks for all your work man !
@BobAsbury
@BobAsbury 4 жыл бұрын
Whenever I'm feeling cocky and arrogant and thinking I'm a genius, I watch a GU video and it pumps me full of perspective. I understood about 30% of this, but I enjoyed it. This will be a good video to watch every six months or so... Each time it will (well SHOULD) make more sense.
@adamgarceau
@adamgarceau 3 жыл бұрын
I learned about some things I didn’t know existed in this video. It’s a lot more helpful when you share more than just “change the saturation and contrast”. Most people don’t explain WHY certain things matter, so thank you.
@retlwiz
@retlwiz 4 жыл бұрын
I'm guilty of having done the "just add contrast and saturation" to Log footage and now I know! Clearly where you expose your footage is key. So useful, especially as I have to match a lot of cameras in upcoming work.
@austin_sauer
@austin_sauer 2 жыл бұрын
I've been dabbling in and out of video work for a few years and am constantly coming back to your videos to learn more. This video is several years old, and I am still using it to gain knowledge on what I am looking at on resolve and how to get technically great results and then use my creative touch as a final grade. Thank you for the way you speak about such complicated topics!
@jhrace2
@jhrace2 4 жыл бұрын
Gerald, I don't know whether to thank you or curse you. I thank you for showing why my colors didn't feel 100% correct when using HLG3, but I curse you for making me want to regrade all of my old videos to cure the problem. Agh! Wonderful video as always.
@TheAndrewforbes88
@TheAndrewforbes88 4 жыл бұрын
I know Gerald's channel has been growing steadily, which I'm happy about, but I'm blown away that he doesn't already have a million+ subscribers. I can't imagine my educational journey in cinematography without Gerald's channel.
@jeremyhle
@jeremyhle 4 жыл бұрын
A tip for the curves window, you should click on the three dot options menu for the curves and enable Editable Splines! Every point on the curves will have a handle for moving splines and its so much easier to control your curve. I usually enable the editable splines and then only push and pull the handles for the end points on the curve
@marquism1799
@marquism1799 4 жыл бұрын
I swear you and Waqas Qazi are the two most knowledgable colorists on youtube. i've learned SO MUCH from watching both of your guy's videos.
@PeterNasello
@PeterNasello 4 жыл бұрын
You've demystified LINEAR and LOG workflows for me, and now I understand what those manufacturer's LUT are for. Thank you.
@danielchavez85
@danielchavez85 4 жыл бұрын
I like this follow-up video. In a past video comparing Sony picture profiles, you said in passing "If you want Alexa colors, you may have to mess with luminance." I actually took that advice and experimented with color depth for my SLOG-2 footage and increased the saturation considerably in camera and I found that my corrections in Resolve were more predictable and closer to real life - requiring less effort. That relationship between luminance of a color and our perceived impression of saturation and contrast is incredible. You proved that here, too. Love your help guiding some experimentation!
@triplescale
@triplescale 4 жыл бұрын
As a musician and sound design guy, its funny how all the sliders and panels remind me of musical EQs, multiband-compressors, etc. I think its a lot easier to understand what’s happening to a picture with a bit of that sound engineer knowledge. Fantastic work! And all available with a click 🤩 Thank you!!
@JesseDriftwood
@JesseDriftwood 4 жыл бұрын
Gerald “definitely smarter than Jesse Driftwood” Undone.
@geraldundone
@geraldundone 4 жыл бұрын
Haha. Oh, Jesse. 🤓😜🙏
@jrjralagao
@jrjralagao 4 жыл бұрын
maybe... but does he drive a bongo?
@Topher0089
@Topher0089 2 жыл бұрын
Holy shit, this video literally changed my entire grading process. The "X" demonstration was incredibly eye opening. I was having a really difficult time trying to grade some low light log footage, kept getting too noisy or not looking quite right. The curves totally solved the issue. Thanks for this.
@caiquecontri7616
@caiquecontri7616 4 жыл бұрын
So much value on this videos man, you don't just throw what to do at us, you show us with graphs and exemples and that makes a HUGE difference. I learn what I'm doing and why. Hands on my favorite channel
@m18gjw
@m18gjw 4 жыл бұрын
I have literally learned more in the last few months watching your videos Gerald, than in the last few years of film courses! 👍🏻 Thank you!
@kamilkp
@kamilkp 4 жыл бұрын
This was SOOO helpful. I am (or shall I now say "was") totally guilty of correcting C-Log footage with just contrast and saturation. INVALUABLE INFORMATION GERALD THANKS 🙏 !!
@LeonUnity
@LeonUnity 4 жыл бұрын
So, the way I've been grading Slog3 with some success, is grabbing the top of the curves on each side and using the scopes to stretch out the white and black points to 100 and 0 in Rec709 respectively. Then I go and start adding in the actual curve points, which gives me the tonality but also allows me to preserve a lot of the data that Slog3 footage is using. Usually creating an exponential (reverse log) curve to counteract the actual log curve, which seems to "linearise" it fairly well. - Petros
@ivanramos2599
@ivanramos2599 3 жыл бұрын
this must be the fifth time I watch this video in the past few months, since I found Gerald Undone here on KZbin, and I still could leran something new. You're freacking brilliant, man!
@joshizposh1995
@joshizposh1995 4 жыл бұрын
Gerald I hope you know how much value you provide to thousands of people around the world. Keep doing what you're doing man the production value and succinct delivery are top notch 👍
@68Snaps
@68Snaps 4 жыл бұрын
Oh wow. Thanks buddy. I had serious issues grading my C200 raw footage. You paved the way. Pulled out my color chart, followed you directions and "boom!" my raw footage is now usable. Very useful. Thanks again. :-)
@rsmith02
@rsmith02 4 жыл бұрын
Not dealing with manually linearizing LOG and HLG and accurate colors is a great reason to just apply the Leeming LUT first and then tweak to taste. Great video and clear examples.
@geoffgrigg
@geoffgrigg 4 жыл бұрын
A thousand blessings on you and yours for generations to come. A seminal lecture. Thank you.
@kilaparnell
@kilaparnell Жыл бұрын
Just got an R5, and you have helped me understand how to grade footage and use curves CORRECTLY. I was over here thinking that my camera was broken because my footage was so grainy, but it turns out I just didn't understand how to use curves.
@DustinHarrelson
@DustinHarrelson 4 жыл бұрын
the amount of value you provide is actually ridiculous. Thanks for all your hard work, man.
@Roland314
@Roland314 4 жыл бұрын
THANK YOU for making videos like this. I'm an experienced stills photographer planning to film my first movie sometime next year, and I've avoided jumping into color grading and LUTs and picture profiles because it seemed so daunting. I use a lesser program to Resolve to edit what I do now, again, because while I know Resolve is better, the learning curve seems/feels so much steeper. For the last month, I've been watching your videos like crazy, shooting test footage, and dipping my toe in the water with all of these things. You have made it so much easier and so much more approachable. I would STILL be avoiding it if not for videos like this.
@gungadin4
@gungadin4 4 жыл бұрын
The smartest guy with the best delivery on You Tube! Its beyond me why this man hasn't got 1 million subscribers yet.
@rsmith02
@rsmith02 4 жыл бұрын
People prefer to follow wound-up equipment cheerleaders who specialize in self-promotion.
@luucamNY
@luucamNY 4 жыл бұрын
This is the reason I tell people don’t just buy Luts because of how it looks I bought luts before and it looked better when I graded the footage myself I would rather buy your luts because you know the little tedious details that can maximize your footage great video 👍🏼
@farisradzuan3796
@farisradzuan3796 4 жыл бұрын
some luts are good, they are created from scratch and you can just apply it everytime, some are just made by hippies who adds contrast and saturation with bunch of color wheels.
@luucamNY
@luucamNY 4 жыл бұрын
Faris Radzuan yea smh anything for money and it hurts the creators who actually know how to make a lut from scratch
@sanjaysingha8911
@sanjaysingha8911 4 жыл бұрын
I haven't started the video yet but i know that this is something that i was waiting for someone to upload. Almost everyone kn youtube tends to grade log footage incorrectly! Which is just annoying. Thanks for the video
@rikomenzies
@rikomenzies 4 жыл бұрын
Gerald is a treasure. We need to protect this guy at all costs.
@rickyissak565
@rickyissak565 4 жыл бұрын
I owe a lot of my filmmaking skills and knowledge to KZbin community, but there’s so much misinformation out there about how to shoot and grade log. This video is by far the most accurate I’ve seen on this topic. Now that 10 bit has become almost universal, there really isn’t much benefit to ettr, which introduces severe issues in post such as exposure consistency and plastic highlight. Log is not exactly designed for very quick workflow. Taking time to nail exposure according to manufacturers’ data sheet, then correcting later with official lut on GH5 and a7iii has given me far superior image and less grading time than when I was ettr-ing with leeming lut(although slog3 exposed correctly on a7iii made denoising absolutely necessary thanks to its 8-bit footage). BTW, why do people keep bragging about how they color correct without a lut as if it’s a more manly thing to do? Shooting log without using official lut is like buying a house and refusing to use the proper door for entrance. Jumping over the window every time might work for individuals but it certainly wasn’t the intension of the architect.
@christiansterk8850
@christiansterk8850 4 жыл бұрын
I can't tell you how much this helped. I feel like I've been living in the dark ages until now. If you were teaching at a university I'd do a second bachelor and attend every lesson from start to finish!
@gonewiththewynns
@gonewiththewynns 4 жыл бұрын
Great video! Seeing it on the color chart was actually very helpful. I (Nikki) appreciate your explainer videos sooo much. Thanks.
@powellfilmmaking
@powellfilmmaking 3 жыл бұрын
Didn't expect to see one of the sailing channels I watch commenting on the filming channels I watch! Cool stuff!
@shreydoshi3729
@shreydoshi3729 4 жыл бұрын
Guys, we're lucky that we're getting such information for free. Thanks Gerald.
@telev2
@telev2 4 жыл бұрын
This was my old question in my mind but I have no one to ask this. Gerald Undone is great indeed.
@lucaphilfranze6922
@lucaphilfranze6922 4 жыл бұрын
Hi, I'm Gerald Undone and my NLE has Auto-save disabled.
@jonathanwetzler3203
@jonathanwetzler3203 4 жыл бұрын
When the pretty girl says she likes boys who take risks
@TheDanielobix
@TheDanielobix 4 жыл бұрын
BADASS
@nconnella
@nconnella 4 жыл бұрын
Gerald! This video is amazing. Thank you! One request as a followup to this, or for future videos. I was super excited when you said you were going to show a more "real world" application of this correction method if you don't have the chart, but then you went and continued to use the chart with the easy to follow "X". Yes, I can memorize your curve guide based on exposure but it would be (have been) much more helpful to see the process of correcting an actual clip of real-world footage without the "X" pattern and seeing how you apply these methods in that scenario. Anyway, thank you again for your fantastic work!
@nerijuskuprys
@nerijuskuprys 4 жыл бұрын
This is so useful. It's so hard to find in depth technical information about color. Amazing video!
@petervaleri4239
@petervaleri4239 4 жыл бұрын
As an aspiring colorist I appreciate the depth you went into and that you’re comparing to scopes, not relying on your eyes. Why not use a color space transform instead of curves adjustments for the initial contrast correction?
@JoshKaufmanstuff
@JoshKaufmanstuff 3 жыл бұрын
That was the suggestion of the highlighted comment above
@umairaijaz2395
@umairaijaz2395 2 жыл бұрын
Man the amount of information i've gained in these 28 mins is insane. i mean i practically feel like a pro in color science now lol. Amazing work.
@panagiotistsiverdis
@panagiotistsiverdis 4 жыл бұрын
When it comes to reviews it's you and Dustin Abbott. Hands down.. You are the best!
@JonPais
@JonPais 4 жыл бұрын
Thanks so much! I’d been struggling for years with the curves. All the tutorials say to make an S curve. Since I ETTR, it didn’t work. I tried your ‘inverted log curve’ today, works perfectly. And so quickly, too! 👍
@V2KPhotography
@V2KPhotography 4 жыл бұрын
Extraordinary explanation as always. Thank you so much for your time and effort. Genuinely appreciate it. Can I ask you a basic dummy question, please? If the final product should appear like a linear image, why even bother shooting log?
@geraldundone
@geraldundone 4 жыл бұрын
Thank you! :) To capture more dynamic range and then you decide in post how to distribute it. Gives you more flexibility than standard profiles.
@V2KPhotography
@V2KPhotography 4 жыл бұрын
@@geraldundone Thank you very much, thank fully I was using it for the correct purpose, However, I was grading it all wrong :-D but not anymore, your video is super helpful
@proctoscopefilms
@proctoscopefilms 4 жыл бұрын
Some log footage can do really cool dual-exposure magic too. Less situations where one part of the image will be super exposed, leaving the objects in the front to be drowned out by shadow. With log, the bright area is toned down while the objects in the front still maintain detail. This does SO MUCH even after grading and everything.
@JonBear
@JonBear 4 жыл бұрын
Super valuable information! I've been mislead by the "adjust contrast and saturation" tutorials in the past. Glad to know why I am using log luts - and what to do if I didn't have one
@FlyinRyanProductions406
@FlyinRyanProductions406 8 ай бұрын
Been watching endless videos on LOG and this is by far the best. Really helped me understand how LOG works. 👍🏻
@freshmas
@freshmas 4 жыл бұрын
When he talks about being "stuck in 10 bit" I'm over here living that 8 bit life
@BrianSantero
@BrianSantero 4 жыл бұрын
I hear ya brotha. We'll get those two-bits sometime.
@jacobnathanielzpayag3885
@jacobnathanielzpayag3885 4 жыл бұрын
I have 14 bit here
@aldoushuxley6255
@aldoushuxley6255 4 жыл бұрын
just take it bit by bit
@lanceevans1689
@lanceevans1689 4 жыл бұрын
@@aldoushuxley6255 Oy! haha
@davidroth7138
@davidroth7138 4 жыл бұрын
Stuck in A7 land.
@blueproduction8026
@blueproduction8026 4 жыл бұрын
Thank you Gerald ! Your channel is probably the best content we can find on KZbin ! Cheers from France !
@DarrellDucharme
@DarrellDucharme 4 жыл бұрын
Just want to say thank you for all the time and work you put in to these videos Gerald, I've been subbed to you since you have 20k subs!
@sergescardigno
@sergescardigno 4 жыл бұрын
I was just about to grade log for the first time ever for a big project today, started my morning with this. Thanks a ton homie
@DieFlashpacker
@DieFlashpacker 4 жыл бұрын
I simply cannot thank you enough for all your helpful videos, I already learned so much from your channel. You really hit the perfect ratio between going into detail and the "why" behind things without making them too hard to understand for a beginner like me. Thank you!
@exploringgodscountry
@exploringgodscountry Жыл бұрын
Seems I have made every mistake! Best tutorial yet, most of the KZbinrs are doing the just add contrast... as of late I only was playing with curves. You really helped make it an exact science. Thanks!
@GoodOleGrant
@GoodOleGrant 4 жыл бұрын
I just posted my first-ever color graded short film piece using the Panasonic S1 with the V-Log kit and I had some difficulties achieving a balanced color style within that footage. Thank you for helping a beginner like myself understand these color values and equations I will be taking these into my next practice piece thank you, Gerald you are the best! :)
@krzysztofzwolinski956
@krzysztofzwolinski956 4 жыл бұрын
Man, so grateful you made this video. It opens eyes and tells technical details in most and best compact form!
@leilujh
@leilujh 4 жыл бұрын
Educating is a skill, you have a fantastic ability to communicate/teach complex info in an entertaining and engaging way. thank you for all your work.
@Lupo2punto0
@Lupo2punto0 4 жыл бұрын
"Hi I'm Gerald undone, and Zebras are not white with black stripes, but simply over exposed"
@valentinavee
@valentinavee 4 жыл бұрын
Thanks Gerald, this was really informative and I appreciate the thorough explanation. I will be paying way more attention to my curves from now on. I especially like when you talked about the range of tonalities across the face. I definitely have found that LUTs tend to crush the highlights together, and curves are a great way to bring that back.
@ShuriBear
@ShuriBear 4 жыл бұрын
Extremely helpful video. At first, I just slapped on a LUT and that was it. But these extra steps makes footage look so much better. It's like night and day.
@reelsportrd
@reelsportrd 4 жыл бұрын
Now this is the kind of breakdowns i like, with factual info and not just opinions. I think something to add would be that some Log LUTS seem to affect the hue/saturation of each color independently which would be a complete guessing game to recreate without a color checker. So, yeah, just use the manufacturer's lut or one from a trustworthy third party. Learned a ton of golden nuggets from this, thanks Gerald!
@acreatorsdiary6813
@acreatorsdiary6813 4 жыл бұрын
Man this video is pure gold! The way you simplify very complex concepts by giving us practical knowledge is mind blowing. Thank you!
@therealiamlove
@therealiamlove 4 жыл бұрын
Love the physical point to the shadows ! Nice touch of connecting with the viewer
@keith-knittel
@keith-knittel 4 жыл бұрын
Color grading is such a finicky and time-consuming process for me, it seems like I can take my time, try to get it right, then make one mistake and the whole thing is ruined. Thanks for the video, I took a few things away from it!
@JayLippman
@JayLippman 4 жыл бұрын
By default the contrast slider in Resolve adds the equivalent of an S-Curve. Im interested to see the results if you turn that off (general options in the project settings) and then add contrast and saturation with the S-Curve turned off.. Maybe less of that weird curve in the X? Worth giving it a shot maybe? Also, I need to get one of those cards.
@geraldundone
@geraldundone 4 жыл бұрын
This is a great point. It does produce a much nicer result. I was going to talk about this in the video, but I figured it might add a lot of confusion for people who don't use Resolve, because I believe other NLEs use a simple S-based contrast. It's still not as precise as finessing the curve yourself, but it's much better for expanding log than default S-Curve based contrast.
@jdavidmusic
@jdavidmusic 4 жыл бұрын
Excellent video and explanation Gerald! I learned a lot... and now I understand why so many people avoid LOG like the plague.. it's because they don't understand it. This vid is a "must watch" for anyone who grades LOG.
@cameralabs
@cameralabs 4 жыл бұрын
Very nicely explained Gerald!
@geraldundone
@geraldundone 4 жыл бұрын
Thanks, Gordon!
@Samhertzog
@Samhertzog 4 жыл бұрын
This may be the most valuable grading video I've found in.. many years
@DERLEO
@DERLEO 4 жыл бұрын
Please explain this to Jared Polin. The part in his "Canon R5 vs Sony a 7s iii" video where he talked about video dynamic range triggered me so much. He just added so much contrast so that it looked as if both cameras had the same dynamic range. The Sony looked almost worse than the Canon.
@alexmeier19
@alexmeier19 4 жыл бұрын
I think you misunderstood his message. Let's say if you have a lot a lot of dynamic range and you film inside a really dark room with a window and a very bright sun outside. If you squeeze everything in your picture it will look artificial/flat/HDR-like (on a 8-bit monitor). So you'll have to expand your wave forms till you either throw away the dark room or the stuff outside in the window. (you have the decision though). Now, if you film the same with a lower dynamic range camera you *have* to decide right when exposing. But the resulting picture will be the same. His message was, it makes no big difference in the final picture if you expose right.
@pcofranc
@pcofranc 4 жыл бұрын
@@alexmeier19 Great explanation. I'm assuming the A7SIII provides 1 stop of dynamic range over the R5 due to it's lower megapixel sensor? HDR virtual reality that doesn't actually exist (to our eyes, for that matter our eyes and brain create something that doesn't exist either). A clap of lightning at night or the sun during the day look the same. In fact it could be argued there is not night / day bright or dark - it is just a matter of what is lit or not.
@Slettador
@Slettador 4 жыл бұрын
I think your video is very helpful for understanding the way contrast works and how you want a 2.4 gamma (which looks straight line in a rec.709 waveform) around your 18% grey. For those who want to stick to their telecine style color grading workflow, this is a great explanation. I only wish you had adjusted the exposure differently at 27:15. Your LUT expects a specific log format and by applying a custom curve, you change how the luminance values are distributed. The proper way to adjust exposure on a log image is to change the offset, since adding in log is the same as multiplying in linear (offset vs gain).
@geraldundone
@geraldundone 4 жыл бұрын
Good point. I'm not sure how to do that in Premiere though. I was trying to only use tools available in all NLEs. Do you know if Premiere has a similar function to offset?
@Slettador
@Slettador 4 жыл бұрын
​@@geraldundone I took a quick look and all i could find is the red, green and blue offset using the ASC CDL effect. Unfortunately, that method is very unintuitive and hard to fine adjust. I'd suggest replicating the offset with the curves tool. Essentially, an offset is shifting the curve up or down but keeping it parallel. This worked great!
@RickValasek
@RickValasek 4 жыл бұрын
More like this one - at first I thought that this would be too basic - however, you expanded my knowledge of using test charts thoroughly. I use several test charts and have be not using them to their full potential. Thanks.
@powellfilmmaking
@powellfilmmaking 3 жыл бұрын
This explains why my skin tones looked so compressed and I couldn't get them right. Thanks Gerald!
@creativeflyfishing998
@creativeflyfishing998 Жыл бұрын
One of the best internet tutorials I have seen regardless of topic! Relevant content, well explained and without repetition. I use the Leaming LUT , but one take from this was that even if you don't use that color checker, a general good way to correct over/under exposure seems to be using the curves (a single point in the middle and adjust to taste)
@SeanofAllTrades
@SeanofAllTrades 4 жыл бұрын
This was extremely helpful. Completely made digital color correction make sense. I never really understood what was happening by changing settings, but this clarifies the process.
@christianhotter
@christianhotter 4 жыл бұрын
This issue has been stumping me. I got to the point where I was thinking I should just shoot with no color profiles. Thanks for explaining this!
@TheJaderiles
@TheJaderiles 4 жыл бұрын
Learn twice as much from this channel than school on certain topics. Keep up the great work!!
@mikaelholz
@mikaelholz Жыл бұрын
Halfway through the video and I have to say, this is an awesome explanation. As someone who has experience in photography, but is just getting into video, knowing those concepts are really helpful!
@MrCoffis
@MrCoffis 4 жыл бұрын
Very helpful to see what actually happens with the colours when you use the standard controls on log. Would be nice if you could talk about the in-built function of Resolve where you can choose your Gamma and Color Gamut and what happens to the image when you grade it then.
@AndyUrtu2
@AndyUrtu2 4 жыл бұрын
Thank you. I finally understand how log video needs to be graded. This video made it click for me.
@ScottWilder
@ScottWilder 4 жыл бұрын
This might be one of the most useful video editing videos on youtube
@incee_netinai
@incee_netinai 4 жыл бұрын
when only one guy on youtube has read the manual
@Roz-Inspire-Video
@Roz-Inspire-Video 4 жыл бұрын
I’m a slow learner Gerald ...and I think the fog may be starting to clear. Always enjoy your upbeat, patient and hardworking approach to this stuff. (Btw ...my A7s iii is due in Nov sometime ...per Camera Canada) I’ll keep hacking away at the learning curve - Thank you!
@ingbaza555
@ingbaza555 4 жыл бұрын
Thank you for the video. My questions are 1) what is the difference between correcting the exposure with curve and with exposure slide (also hightlight, shadows, white and black). 2) Since the order of Lumetri Colors in Premiere Pro is like nodes on Resolve (if you switch what's top and what's on bottom, it will give different result), should I adjust Curve, create the new Lumetri and then adjust exposure and contrast ?
@personaldronerepair6141
@personaldronerepair6141 3 жыл бұрын
One of the best channels that I have visited . Great information! Thank You !!
@RobertHenry_82
@RobertHenry_82 4 жыл бұрын
Another brilliantly technical explanation to a question that lingered in the back of my mind. Thanks!
@Humcrush
@Humcrush 4 жыл бұрын
THANK YOU. THANK YOU. THANK YOU. Did I say thank you? 99% of people shooting log and not using a corrective lut end-up with crap images. Hopefully some of them will see this and at least use a purpose-built curve to normalize their image before further grading. btw, thank you.
@thiagomoreirapedroso9573
@thiagomoreirapedroso9573 4 жыл бұрын
YES, GERALD. JUST WHEN I NEEDED IT!
@masonltompkins
@masonltompkins 2 жыл бұрын
This was incredibly helpful. I’ve been crushing skin tones in SLog2 and trying to figure it out for so long. First actual technical explanation that I can use to do it right. I watched maybe 10 others who by this knowledge, were just breaking their footage from the start. Thanks!
@AndreasLopezVG
@AndreasLopezVG 4 жыл бұрын
Hi, Gerald! Just discovered your channel weeks ago and loved it inmediately. Greetings from Spain! You make color grading easy to understand.
@rudolfabelin383
@rudolfabelin383 4 жыл бұрын
Gerald! I hate it when you read my mind (last time was HDMI cables), this is exactly what I need NOW!!!!!! Love from Sweden!!!
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