Photoshop color is STILL broken!

At least someone is doing something productive in his quarantine.

Talking about weird colour stuff. I recently learned that the colour picking tool in chrome doesn't actually show the hex value of the colour the uploader intended, but instead the colour after the colour profile is applied.

Bit niche, but in computer vision stuff LAB tends to be more accurate to real-life scenarios; the representation makes better sense when having to detect objects. Just another place LAB is amazing.

Keep in mind the Black & White effect in Premiere Pro does not work exactly as expected. It does not desaturate the image in RGB space (averaging the channels). Instead it seems to mimic the LAB color space while acting in RGB space. It has a list of controls which can be seen in After Effects, which apply arbitrary weights to different color ranges, acting similarly but not exactly the same as LAB.

For them to change this in Photoshop they'd have to break compatibility basically, otherwise any old files you open with adjustment layers (or heck, anything with transparency) would likely look a fair bit different than what it did back when the file was created in a previous version. A way around this could be like what they did with brightness/contrast and include a toggle to "use legacy" or not, essentially shipping the tool with two ways on how to compute things.

I seriously love this channel. The weird combination of shitposts and genuinely informative videos like this is amazing. Taran, you're awesome.

I just enabled the gamma option a little bit ago, then this video appears in my inbox and solved a problem I hadn't even reached yet!

If Adobe took a page from a LAB book, they'd ruin the book just like everything else they ever touched

You discovered the correct option. The problem is that Minute Physics was only partially right. The gamma option only fixes the linearity of the color space, but that is not the only issue. Linear RGB has additional problems with inconsistent lightness between hues. Your blending is fixed in Lab mode because Lab is a perceptually correct color space. In Lab mode it also uses a perceptually correct blending formula, which is not just averaging colors like the Minute Physics video implies. Technically the way photoshop does blending in RGB is just plain broken. They should just give an option for perceptually correct blending without making you switch the color space. Additionally, I think some of the problems you were having with hue rotations is because the Lab color polyhedron is not well suited for artistic work. Check out https://www.hsluv.org/ which attempts to address this problem(Can't say how successful they were)

This video details how specialized someone can be in something like Photoshop and Premier tooling. You knew what was wrong, how to test and verify, how to color correct to achieve similar results, and how to setup a workflow in the future. This is the kind of high-level stuff I do in code, but now I'm seeing it applied to a completely different skillset. This is also your first video I've seen. Definitely a good start :).

In Photoshop you can just set the Hue/Saturation's blend mode to Hue or Color and it will be the same as working in LAB.

woohoo, more Taran ranting about colour!

To answer your implied question about JPEG 2000, someone else mentioned the benefits earlier. It is very rarely used in anything but one specific package: digital cinema packages (dcp). All digital movies played in the cinema are actually, just like their film counterparts, stored as a series of photos (not like film) in JPEG 2000. This is specified in the dci 2k and dci 4k specifications, so if you think cinema color and picture quality is good, you know what it is now. Edit: You know what the container is capable of...

Funny thing is that I'm pretty sure I was taught at university about Photoshop and Lab mode about 15 years ago already. Which gives the "STILL broken" a whole other dimension.

You've made a lot of progress over the past year. It looks like you still have some questions, but I think you'er begining to understand that the math driving all of this is derived from observing what the human vision system observes and then adjusting it to taste. Yeah, not synesthesia, but the fact that there is a whole lot of crossover between what is prefered by the artist and what is actually correct. I'm glad to see you learned about Lab color and I'm sure you've seen the blurb that it mimics human perception. In Photoshop CS6 they started expanding our the support for Lab in PS making it open to utilization with various filters. It's an excellent model. You've dug pretty deep and have been able to get community help for quickly adjusting your own learning curve and accelerating it. You've seen where video != still color science and that there is significant conceptual differences and similarities that help tell the whole story. I'm going to toss two more things your way that might help you understand this field a little more thoroughly. 1) Ted Talk on optical illusions. Pay closer attention to the dots on white vs black: https://www.youtube.com/watch?v=mf5otGNbkuc 2) I assume you have a stills camera that can shoot in RAW? Go download RawTherapee (https://rawtherapee.com/) and dive into adjustments there. 2b) By extension, their Color Toning tool under the color tab (http://rawpedia.rawtherapee.com/Color_Toning) 2c) How those controls were influenced by cinematography (https://blender.stackexchange.com/questions/55231/what-is-the-the-asc-cdl-node/55239#55239) I do stills photography. Playing with RawTherapee a bit more recently instead of using Lightroom. It's an extremely potent tool. I'm red-green color deficient/blind. Anomalous trichromat, not a full on dichromat or the commonly interpreted monochromat. Because I don't see color properly I know I cannot trust my own vision so I have approached the topic from the sciences end to trace their origin, the fundamentals, and figure out what the industry professions have tried to define as what is correct. It's a glorious mess as you've learned over the past year.

Did you switch your memory settings from “performance” to “memory” in premiere? The color process is wildly different in both modes. I believe premiere is using luminance and chrominance from broadcast specs, which is more similar to LAB than RGB. It is a much older format than LAB color space. Above all, the black and white filter in lumetri and photoshop both don’t use the same lightness values for each hue, so it can all be arbitrarily adjusted, switching to black and white via the effect to test it is not a reliable test.

Thank you Taran for this video! I found it to be very informative. I think anyone who uses photoshop or does colour correction should watch your colour videos. Keep it up!

That taskbar though. There is more icons there than the amount of shit Linus dropped. Impressive.

Lol, Taran never stops surprising me. Awesome find, thanks for sharing!

I love you. I've had such a struggle with PSD colors for a lot of these exact reasons. This is very helpful :)