I’ve always found that

Forums Photometry CMOS for Photometry I’ve always found that

James Screech

I’ve always found that increased gain leads to a larger scatter in the photometry readings and larger errors reported by the photometric software. The error (sigma) increases in greater proportion as the signal (photons) decreases (sigma being the square root of the signal) and this is not counteracted by the reduction in read noise. At least that’s what I suspect, I’m no mathematician though.