The LED method looks fairly easy, and the parts don't appear that expensive. I know how to solder. What I am not as familiar with is all the symbols used in circuits. Some like the switches are not that hard to figure out. Others are more difficult, but it basically is just a plan for the path of electrons. I just need a reference on how to read the plan. grin.
-------- Original Message --------
Subject: Re: densitometers
From: lookaround360@xxxxxxxxxxxxxxxxx
Date: Mon, October 12, 2009 7:26 am
To: List for Photo/Imaging Educators - Professionals - Students
<photoforum@xxxxxxxxxxxxxxxxxx>
Look here and you may find instructions for making a good densitometer
from a light meter.
http://www.markerink.org/WJM/HTML/mainpage.htm
Google "Zone System". The late Phill Davis, U of Michigan prof., and
author of several Zone System texts had a good design for an old
Honeywell spot meter.
AZ
LOOKAROUND - Since 1978
Build a 120/35mm Lookaround!
The Lookaround E-Book 5ed.
http://www.panoramacamera.us
> -------- Original Message --------
> Subject: [SPAM] Re: densitometers
> From: karl shah-jenner <shahjen@xxxxxxxxxxxx>
> Date: Sun, October 11, 2009 11:15 pm
> To: List for Photo/Imaging Educators - Professionals - Students
> <photoforum@xxxxxxxxxxxxxxxxxx>
> Roger Eichhorn
> : Something happened in the transmission, or receipt!
> hmm, doesn't look *quite* right, though the original came through fine for
> me
> still better than some i've sent in the past that just muddled up
> comletely!
> if I look at the message source (control+f3 on a windows machine) I see the
> posted message looks OK - it can be copied and pasted out of that into a
> text editor for a clearer view
> k
