__ct__4LunaFv on Nostr: reading up on the technicolor process again i knew it recorded red/green/blue onto ...

reading up on the technicolor process again

i knew it recorded red/green/blue onto three separate strips of b&w film, but i always assumed it was splitting the light in three directions, through filters, and onto identical strips of film

turns out it's much cleverer than that, and only has to split the light in two directions

one path goes through a green filter and onto a strip of film to capture the green image, as i'd assumed, but the other path is wild

it goes through a magenta filter to block any green light, and then hits two strips of film pressed against each other - an orthochromatic film captures the blue image, then a layer of red-orange dye blocks any residual blue light, and then finally a panchromatic film captures the red image