anon1 Posted July 9, 2016 Share Posted July 9, 2016 My question is basically: Why does the technocilor emulation shown in this video https://vimeo.com/155520871 work? In the attached picture I´ve outlined the color manipulations that are applied and as one can see, they come out just the same as they come in. My guess it that it has to do with how the lighten blend mode operates but I´ve not cracked it yet because I think the lighten blend mode works the same for any color and the luminosity so the channels are just shifted + shifted backwards. Write up on the actions: Red + 180deg (recolor) >> at 180deg Green +180deg (recolor) >> at 300 Blue +180deg (recolor) >> at 400%360 = 60deg Then the lighten blend mode is used to mix them together R,G,B +180deg HSL R >> at 180 + 180 >> 360 G 300 + 180 >> 120 B 60 + 180 >> 240 So that is just 360/3 = 120deg steps between the color channels as it was before By understanding this procedure you can even turn this into a flexible filter R channel recolor to 0 + x deg G channel recolor to 120 + x deg B channel to 240 + x deg HSL shift set to + x deg Why is it working that way??? Here I´ve uploaded the non destructive version of the effect https://forum.affinity.serif.com/index.php?/topic/16056-simple-letterhead-mockup/?p=103118 Any help/ ideas/ explanations greatly appreciated! Quote Link to comment Share on other sites More sharing options...
anon1 Posted August 3, 2016 Author Share Posted August 3, 2016 Any ideas? I guess James Ritson is just hugely busy doing 3D work but a one liner would be really appreciated :D Quote Link to comment Share on other sites More sharing options...
Staff Leigh Posted August 5, 2016 Staff Share Posted August 5, 2016 James is always busy :) I see what you mean but I have no idea how this is working the way it is. Hopefully James will explain - if not, I will see what I can find out. Quote Link to comment Share on other sites More sharing options...
bbd10 Posted August 18, 2016 Share Posted August 18, 2016 This is not a reversible process because of blending mode. You can also try screen blending in place of lighten. In the tutorial we have Lighten blending mode applied first and then HSL Shift adjustment to blended channels. In this case, for example, you have two red channels - one from magenta layer and second from yellow and those channels are blended together. When pixels of the upper layer are lighter than the ones on the layers below, then pixels from upper layer are kept in the image. If the pixels in the layer are darker, they are replaced. This is NOT, even with HSL Shift, reverse operation for what recolor adjustment have done. If you add Invert adjustment to each layer and use darken blending mode then an effect will be sometimes more interesting. anon1 and Leigh 2 Quote Link to comment Share on other sites More sharing options...
MJSfoto1956 Posted August 19, 2016 Share Posted August 19, 2016 and as a film person mentioned to me, if you wanted a "real" technicolor look, you'd want some minor misalignment, dust spots, and scratches! (the process was prone to all that) Michael anon1 1 Quote Link to comment Share on other sites More sharing options...
anon1 Posted August 19, 2016 Author Share Posted August 19, 2016 This is not a reversible process because of blending mode. You can also try screen blending in place of lighten. In the tutorial we have Lighten blending mode applied first and then HSL Shift adjustment to blended channels. In this case, for example, you have two red channels - one from magenta layer and second from yellow and those channels are blended together. When pixels of the upper layer are lighter than the ones on the layers below, then pixels from upper layer are kept in the image. If the pixels in the layer are darker, they are replaced. This is NOT, even with HSL Shift, reverse operation for what recolor adjustment have done. If you add Invert adjustment to each layer and use darken blending mode then an effect will be sometimes more interesting. YEAH thanks man, cracked it! :D @MSJfoto actually no, not that interested but thanks anyway :P Quote Link to comment Share on other sites More sharing options...
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