Xref: utzoo rec.photo:1909 sci.electronics:2069
Path: utzoo!utgpu!water!watmath!clyde!rutgers!gatech!dcatla!ittfb
From: ittfb@dcatla.UUCP (Thomas F. Blakely)
Newsgroups: rec.photo,sci.electronics
Subject: Homebuilt transmission densitometer?
Message-ID: <2659@dcatla.UUCP>
Date: 8 Feb 88 21:29:05 GMT
Distribution: na
Organization: DCA, Inc., Alpharetta, GA
Lines: 15

A handy tool around the Black & White darkroom these days is a
transmission densitometer.  While relatively inexpensive ones are
available (ca. $200) it might be an interesting project to build
one.  Has anyone had any experience along these lines?  It should
be pretty straightforward, unless there's something I missed.
Since it's for monochrome, color sensitivity of the sensing element
(photodiode?) shouldn't matter.  How about connecting the output to
your PC (everybody has one, don't they)?  How about hearing from
those of you with experience, or even ideas?  (Or, for the sci.
electronics folks, maybe we could start talking about mercury-
filled speaker wires again :-).

Tom Blakely
(404)442-4866
gatech!dcatla!ittfb