Today I've been experimenting with #trichrome, 26 November 2022

Today I've been experimenting with #trichrome, 26 November 2022

I've had some red, green and blue filters for ages, but never got around to using them. Today I thought I would try some digital trichromes with the Nikon Coolpix 990.

First of all I set the camera to the 'Rec M' setting which remembered my previous settings of black and white and manual mode. As I had found that infrared exposures were better with 'program', as I was using filters I set the mode to program.

I then took three photographs, using the red, green and blue filters. I also took a 'bonus' image with the 720nm Infrared filter, just to see what might happen.

The images were processed with GIMP photo editor adapted from the method outlined by Joshua Bird ( The three images were copied as layers into a single image file as red/green/blue (top/middle/bottom).

In the red layer the green and blue channels were set to zero, in the green layer the red and blue channels were set to zero, and in the blue layer the green and red channels were set to zero. The blending mode of the red and green layers was set to 'addition', and that was it.

All that remained was to zoom into the image and move the layers around, if necessary, so they were completely aligned. After that, the files were saved as GIMP .xcf files for later and the layers flattened and exported as PNG or JPG files.

Joshua Bird's method was devised for infrared photography as he was trying to recreate the aerochrome look. In his method he used a 720nm Infrared filter, a normal red filter and a green filter for the red, green and blue levels, respectively.

I did actually take an image with the IR filter, so I thought I would also try Joshua's method. It worked out rather well!

Of course, I had to try some trichrome with the Sony Mavica MVC-FD81 for the #ShittyCameraChallenge #1990sCameraChallenge. Again the image was a little dark, and will probably need some adjustment, but I was very happy with the result. 

#trichrome, #tree, #monochrome, #composite, #rgb, #filter, #filters, #channels, #infrared, #digital, #photography, #experimental, #FloppyDiskSquad,


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