Loving this format. The explanation from Scene to Display space was great and I love the technique of moving middle grey to access other parts of the exposure.
Agree. I have taken Cullen's courses. I watched all his videos and grade episodes and collected them in a Notion doc by topic. Had to to keep track. His knowledge and approach are the best on the entire web.
@@andy80sdrums That would be sweet, feel like there's an absurd amount of content about all sorts of stuff and TH-cam playlists just aren't cutting it.
Another fascinating and interesting grade school. I am much better informed having watched this. The maths hurt my brain a bit, but some great stuff here thanks mate!
Thank you Cullen for this insightful lesson. I just have one question. When we have to transform our working color space into the display color space, is it necessary to perform the two steps? First report the logarithmic cure linearly via the first CST and in the second CST bring the linear signal to the range of our display? As I tried, I realized that only in this way is the middle gray value correct (45% in gamma 2.2). If I use a single CST and switch from the logarithmic signal to the gamma 2.2 signal the middle gray value is not correct, it is very low (38%)
Sure thing! No, it's not necessary to do the linearization and then gamma encoding as two separate steps, as this is what's happening under the hood anyway. The difference you're seeing sounds like a matter of 'Use Forward OOTF' being turned off vs on...
@@CullenKelly Hey Cullen the solution was to change the OOTF settings. By deactivating it, the middle gray mapping appears correct to me. But theoretically it shouldn't be the other way around, that is, if I apply "Forward OOTF" on a signal that goes from DWG Intermediate to 709 gamma 2.2, the middle gray map should be correct. Technically it should work like this, right? Why do I have to guess whether I should keep the OOFT function active or not?
When looking at a greyscale ramp in a node based color managed environment would i have to also put csts on the ramp to go into dwg? And how do I know the input? Would it be the project settings, rec 709 or srgb?
I’ve been using HDR global to adjust exposure in photometric way but I’ve noticed when I raise exposure my scopes show it’s lowering shadows. It looks like raising contrast. Has anyone ran into this before
Ok so 57:25 moves mid grey to 60% but in real life jobs what are the benefits ? Ok you get access to lower parts of the mid grey exposure and ? I mean everything thats not clip is available so in any case you dont create information from nothing so for me ill stick with linear gain,ratio and balance 🤷🏽♂️anyways i love the knowledge cullen 🙏🏽
Yep, the overall benefit is a different feel to your tools, and more room in custom curves to shape the low end, which generally speaking is more visually critical than the high end. For adjusting exposure and contrast/pivot, there’s no real difference, but for LGG and custom curves you’ll feel a big one!
Sorry but you lost me 15 minutes in. I could not get to terms with your colour management workflow. My limited understanding is using "CST in" and "CST out". With you clicking clips, timelines and other buttons you lost me. Maybe this new format of Grade School is not for me but for people who have a greater understanding and are Professional Colourists from the outset. From my perspective, this is a shame because I think the concept of Middle Grey is interesting and I want to expand my knowledge, but if this knowledge is obfuscated by complex methods and practices of setting up colour management just to get through the door, then maybe I'm not the audience these talks are aimed at. Which is a shame. Sorry.
No sweat, it can be a lot to bite off! Try watching/re-watching this video: th-cam.com/video/RuYBk-YvCZE/w-d-xo.html If you're comfortable with everything I'm doing there, the discussion will be a lot easier to follow.
Cullen is giving out valuable information for free man and you're complaining at the lack of effort on your end to learn. There's plenty of other channels that might vaguely explain it for your 10 secs attention span. Good luck! And cullen thank you for the video man you're crushing it!
@@frankinblackpool I don’t need your permission in a public comment section, maybe next time keep your comments in your notes so people won’t reply lol
@@JimmyCartter I never gave you permission, seek your permission nor did anybody mention the need for permission in this discussion that you have decided to throw your weight around to belittle me. You are obviously looking for somebody to argue with. I suggest that you go forth and multiply.
Loving this format. The explanation from Scene to Display space was great and I love the technique of moving middle grey to access other parts of the exposure.
It's ridiculous. It's ridiculous it's free.
Agree. I have taken Cullen's courses. I watched all his videos and grade episodes and collected them in a Notion doc by topic. Had to to keep track. His knowledge and approach are the best on the entire web.
@@andyzancolor Heyo my guy, any chance you would wanna share that Notion doc? If not, I understand.
@@Bruh120hz Will look into it, might reach out to Cullen first.
@@andy80sdrums That would be sweet, feel like there's an absurd amount of content about all sorts of stuff and TH-cam playlists just aren't cutting it.
Sadly, over my head. But I'll keep trying!
Keep at it for sure! Every single thing I talk about in this video was over my head at one point.
Love this format! 🔥
Thanks Cullen, that was awesome ❤
So phenomenal. Thanks, Cullen.
Amazing video Cullen, Thanks. I never thought of that 55:10 what a great tip !
Another fascinating and interesting grade school. I am much better informed having watched this. The maths hurt my brain a bit, but some great stuff here thanks mate!
Great video. Are your various tools, DCTL and other tools, still available? I have some but don't see a web site store to download. Thanks!
Thanks for this grade school, Cullen! Where can I get more info about that Mid Gray Mapper dctl? Is it free, is it paid, is it available anywhere?
thanks .
very informative
Audio at the start was off but corrected at two and a half minutes in... still a bit quiet.
Thank you Cullen for this insightful lesson. I just have one question. When we have to transform our working color space into the display color space, is it necessary to perform the two steps? First report the logarithmic cure linearly via the first CST and in the second CST bring the linear signal to the range of our display? As I tried, I realized that only in this way is the middle gray value correct (45% in gamma 2.2). If I use a single CST and switch from the logarithmic signal to the gamma 2.2 signal the middle gray value is not correct, it is very low (38%)
Sure thing! No, it's not necessary to do the linearization and then gamma encoding as two separate steps, as this is what's happening under the hood anyway. The difference you're seeing sounds like a matter of 'Use Forward OOTF' being turned off vs on...
@@CullenKelly Hey Cullen the solution was to change the OOTF settings. By deactivating it, the middle gray mapping appears correct to me. But theoretically it shouldn't be the other way around, that is, if I apply "Forward OOTF" on a signal that goes from DWG Intermediate to 709 gamma 2.2, the middle gray map should be correct. Technically it should work like this, right? Why do I have to guess whether I should keep the OOFT function active or not?
When looking at a greyscale ramp in a node based color managed environment would i have to also put csts on the ramp to go into dwg? And how do I know the input? Would it be the project settings, rec 709 or srgb?
Thanks!
Do you have a book "The Colorist's Ten Commandments" or just ebook?
great
Imma be real, took me 57 minutes for some shit to click for me. But IT CLICKED
Let's goooo
I’ve been using HDR global to adjust exposure in photometric way but I’ve noticed when I raise exposure my scopes show it’s lowering shadows. It looks like raising contrast. Has anyone ran into this before
No….interesting.
@ also when I lower shadows in hdr it actually raises it instead
@@isaacalgutria something is not right with your setup.
@ yes, what’s worst is that it varies from clip to clip. Even when I make sure I reset nodes.
Ok so 57:25 moves mid grey to 60% but in real life jobs what are the benefits ? Ok you get access to lower parts of the mid grey exposure and ? I mean everything thats not clip is available so in any case you dont create information from nothing so for me ill stick with linear gain,ratio and balance 🤷🏽♂️anyways i love the knowledge cullen 🙏🏽
Yep, the overall benefit is a different feel to your tools, and more room in custom curves to shape the low end, which generally speaking is more visually critical than the high end. For adjusting exposure and contrast/pivot, there’s no real difference, but for LGG and custom curves you’ll feel a big one!
@@CullenKellyhope to see more use of it soon, thanks cullen 🙏🏽
im just a guy trying to make music videos for his music...what is going on...I can't find the part where I do the thing...lol
Sorry but you lost me 15 minutes in. I could not get to terms with your colour management workflow. My limited understanding is using "CST in" and "CST out". With you clicking clips, timelines and other buttons you lost me.
Maybe this new format of Grade School is not for me but for people who have a greater understanding and are Professional Colourists from the outset.
From my perspective, this is a shame because I think the concept of Middle Grey is interesting and I want to expand my knowledge, but if this knowledge is obfuscated by complex methods and practices of setting up colour management just to get through the door, then maybe I'm not the audience these talks are aimed at. Which is a shame.
Sorry.
No sweat, it can be a lot to bite off! Try watching/re-watching this video: th-cam.com/video/RuYBk-YvCZE/w-d-xo.html
If you're comfortable with everything I'm doing there, the discussion will be a lot easier to follow.
Cullen is giving out valuable information for free man and you're complaining at the lack of effort on your end to learn. There's plenty of other channels that might vaguely explain it for your 10 secs attention span. Good luck! And cullen thank you for the video man you're crushing it!
@@JimmyCartter When I want your opinion I will ask for it.
Till then, keep your opinions to yourself.
@@frankinblackpool I don’t need your permission in a public comment section, maybe next time keep your comments in your notes so people won’t reply lol
@@JimmyCartter I never gave you permission, seek your permission nor did anybody mention the need for permission in this discussion that you have decided to throw your weight around to belittle me.
You are obviously looking for somebody to argue with. I suggest that you go forth and multiply.