genjosanzo8 wrote:if you correct the black you will have the same thing as the season sets for the dark area
[spoiler]
[/spoiler]
This statement just isn't true. The images you have posted have "crushed the blacks." By that I mean the black level itself has been completely lowered.
When you speak of removing the color cast using the whites, you are targeting the white only. Without targeting the blacks, you are leaving the color cast in the darker areas of the picture. In other words, using an eyedropper tool and sampling those pixels, you'll find that the original image may have had 15% more red in the eyes of a character. After the removal, the 15% of those targeted white pixels are now balanced. The issue is your black pixels will still have 15% more red in them. It isn't as noticeable since the levels are so low--- but it exists.
Speaking specifically, the linear transformation you've applied to the color channels are always start at the origin... which allows the blacks to keep the color cast in them. You can balance the blacks... not push them down to where excessive detail is lost.
It's also worth mentioning what you said is true though. The eyes on the film probably aren't always 100% white. We're just assuming they are using white paint on the animation cells. When correcting the color, you
must have something to target. Targeting the eyes to be pure white seems reasonable. The same can be said of Goku's hair. I'm assuming they are using a true black of some kind, so I balance the blacks. Now--- how dark is the true black? That's the real issue I'm trying to point out here. The screens you've posted, they are an extreme... versus something that is slightly brighter (a very very very dark grey... but the grey is balanced... no hint of red in it).
Make sense? Normally, I try to post screen shots for this, but I don't have a great example on the hard drive, and I would have to dig to find an episode. To be honest, it might be worth posting the screens for others.