Re: Poor man's densitometer

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From: George Huczek (ghuczek@sk.sympatico.ca)
Date: 03/09/01-04:11:01 PM Z


> I now use the seriously impoverished
>man's densitometer. It consists of an ordinary 100watt lightbulb on my
>darkroom wall. Hold your neg up to it and if it looks right it is probably
>right.If its a lith neg you won't see much as it should have an end density
>of a brick wall. You don't HAVE to use any particular nett density for any
>process. You can use a 0.9 neg for pd and 3.5 for a gum print.

You can do even better with an uncalibrated step wedge and a piece of
cardboard with a small hole in it to view negatives over a light table.
Surprisingly, the eye is very good at being able to discriminate between
slight differences in density. Very affordable, and a wee bit more reliable
than holding the negative up to a light bulb.


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