r/trichromes

Hi!
I just bought a set of infrared filters (Neewer 4-piece infrared filter set: 720, 760, 850, 950nm) and I wanted to try to do a trichrome image, but only in the infrared spectrum. By subtracting exposures, it looked like it could be achieved.

I used Blender to subtract and combine the exposures, but the result is quite disappointing. There is no real color (other than movement artifacts and, I think, the fact that I didn't hold the filters perfectly straight in front of the camera).

All 4 exposures look very similar. I wonder if the filters are the issue (I couldn't find any spectral curves or datasheets for these filters) or if it's just not a practical idea. See the last 4 images, in order: 720, 760, 850, and 950nm.

Camera I use: Full-spectrum Leica C-Lux 3 (aka Lumix DMC-FX37).

Taken in the studio on HP5+

Still can not figure out the colours for sure.. i wish i had a blue sky 😅

I shot a roll of Dracula with filters in the sunflower fields and I think this was my most successful trichrome edit to date. I was working with an IR and a Red filter and I honestly lost track of which edits are using a standard Red filter and which used the IR.

Still trying to guesstimate the filter factor on the Chinese filters I have. Sheep make for good subjects though.

Continuing on with this summer project.