help me out here, i have never done any of this before...
my school just recently acquired a besseler pm color analyzer, really old unit. i have it set up next to the omega color enlarger, as it is the only enlarger that could make full use of the device.
how do i use it? do i have to calibrate it? what are the four dials that go from 0-100 used for?
and while i'm at it, what exactly is a densitometer used for? i hear that they are useful, but what exactly do they do? i can assume that it measures the density of the negatives, but exactly what does that do that makes these indispensable?
thanks.
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