Similarly with photographic film, Zeiss continue to make a medium-format mono film called Gigagbitfilm which requires special developing but when scanned, in theory, can give gigabit images. Unfortunately not only is it mono but only ISO 40 so exposures are difficult.
If you were shooting a still subject, you could put a filter that excluded other wavelengths and capture the RGB channels separately on mono film and then marge them in post. I've been tempted to convert my digital sensor to mono-only by removing the color filter array to see if it made any difference.
Also, I don't quite understand why ISO 40 would make anything difficult. I regularly shoot at ISO 50 on digital.
> I've been tempted to convert my digital sensor to mono-only
Have you come across the Leica M-Monochrom? When I first heard of it I thought it was odd, but understanding how the sensor work I can see what an advantage it could be for B+W photography.
