I wish a good monochrome digital camera didn't cost a small fortune. And I'm too scared to try to remove the Bayer grid from a "color" CCD.
Seems that, without the color/Bayer thing, you could get an extra stop or two for low-light.
I had a crazy notion to make a camera around an astronomical CCD (often monochrome) but they're not cheap either — at least one with a good pixel count.
For black and white photography, the best high-end camera seemed to be the Leica M Monochrom (https://en.wikipedia.org/wiki/Leica_M_Monochrom), but to my mind, it's trounced by the Foveon:
I've replaced my D5300's viewfinder focusing screen a couple of times, back before I outgrew the need for focusing aids. I also wouldn't try debayering its sensor! But that sort of thing is what cheap beater bodies off your friendly local camera store's used counter, or eBay, were made for. Pixel count isn't everything, and how better to find out whether the depth of your interest would reward serious investment, than to see whether and how soon it outgrows unserious? Indeed, my own entire interest in photography has developed just so, out of a simple annoyance at having begun to discover what a 2016 phone camera couldn't do.
Seems that, without the color/Bayer thing, you could get an extra stop or two for low-light.
I had a crazy notion to make a camera around an astronomical CCD (often monochrome) but they're not cheap either — at least one with a good pixel count.