I used a 49mm filter with a 200mm telephoto lens.
Color is actually pretty close.
Also IR will fill the wells of the pixels without a problem as it just passes thru the debayer filter. IR is a shorter wavelength and the debayer filter hasnt got a IR block, thus the pixel wells collect the same amount of light/photons.
This is why filters have a IR block and a UV block, to prevent this problem.
When i did the debayer color conversion, i just left it as it was. There was no need to get the exact balance correct. It doesnt make any difference to the eye. I could have made it more red if i wanted, but its more easily seen as is.
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