I have recently bought a used Noritsu DM-1 transmission/reflection densitometer without instructions and wondered whether any of you out there have used this or a similar machine and know how to use/calibrate it.
I have tried websearches on Noritsu, both UK and USA and I cant find anything ab out densitometers, only mini-labs and other stuff.
The densitometer appears to work OK. If I set it on "V" (dont know what this is , I only know the other three settings are colour channels) and use the "transmi ssion" setting (this is the setting I'm interested in) it displays values that a gree nr enough with the steps on my uncalibrated Agfa step tablet, i.e.: 0.15 st eps.
I know that for comparative purposes I only have to subtract the a film-base + f og reading from other readings to find the range of a neg, but I would like to b e able to calibrate it. It comes with a sort of calibration device cocnsisting of a wafer with one opal and one dark round lens and someone has recorded values against each - any ideas what this means?
Thanks for your time.