I did that for years and had good but frustrating results with it.
I also never quite understood what a channel swap or channel mixer was used for ... or how to use it.
I ended up with a nasty pink mess or a pretty nice black and white conversion.
This was a very long exposure with a 720nm filter attached to my Olympus camera lens. I do love how this turned out. Most of my other IR shots were flops.
I kept trying though. I wanted to have those cool odd colors that I'd seen before. I read tutorials and thought I had 'it'. No. I wasn't really very close.
Sometimes I was rewarded with this...
Yet I wasn't going to give up.
I switched the white balance to Fluorescent. And got purply pinky stuff.
And my only choice was to convert it to black and white.
Again, not quite what I wanted.
So I went back to the drawing board and started to learn about Channel Mixers and swapping blue and red. About how the green effects things. I began to dabble in adjusting the hues of colors.
No rhythm or reason for it. Just experimenting.
I picked up an old file that I considered a flop from 2017.
Well that was odd enough, but turned out a bit better in black and white than the odd colors. But I sort of liked the odd colors. This was a 3 step process. Going from Auto Color>Channel Mixer>Saturation and Hue adjustments. The color shot could have been a bit more normal, I suppose, but I was into seeing how far I could push the odd colors.
So I thought I'd try another one or two from 2017.
I won't show you the red shot but...
I like this edit a lot. In fact it would be one I'd keep.
But I can't leave well enough alone of course.
Well why not? False colors!
What if I could see the world through different light wavelengths?
And then of course I had to convert it to Black and White because not everyone can handle liking false colors and seeing the world in colors that are not supposed to be.
With my little converted pocket Canon I am having a lot of fun.
Enough so I may eventually convert my Olympus to a full spectrum camera for Infrared work.
It may be wild or it may be tame.
It depends on my artistic type mood.