I have a Zone VI cold light ( original, not v54 ), and I print by counting metronome clicks... but I think I'm set in my "let it warm up" ways now and probably don't need a compensating metronome. I've got a meter that I used to hook up to the photodiode sensor but the fact is the light is pretty stable after it overcomes initial warmup and I'm getting perfectly repeatable results. I'm patient so I don't mind a bit of wait for warmup. Probably I'll kick myself someday for not getting one when I had the chance!
Originally Posted by ChuckP