More Trichromes

Trichrome is a bit of a misnomer for these photos. I’m using four photos each (autoexposed this time!) for these photos, Red, Green, Blue and Lightness. Like CMYK, but additive. And the lightness is absolute.

It makes me wonder what I could do with other colour spaces. Specifically, CIELAB. One exposures for lightness, two exposures for a* (Red-Greenness), and two more for b* (Blue-Yellowness). More colours. One more filter. Pentachromes!