New answers tagged layers
When talking about blending the layers, creating 3 layers with red/green/blue data and choosing a blend mode of Difference can achieve what you want.
Early color photography exposed three black & white plates (film) one to red, one to green, one to blue. The exposures were made via Wratten 47B blue – Wratten 58 green – Wratten 25 red. These are the three “Tri-Color” filters used to make color separations. We ended up with three negatives that represented the three primary colors. These were printed ...
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