[pure-silver] Re: enlarger meter
- From: Chris Ellinger <ellinger@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Fri, 09 Nov 2007 10:59:16 -0500
Sauerwald Mark wrote:
I mistyped when I said 'Epson' - it is the Ilford
enlarging meter that I use. It has a sensor, a knob
and three LEDs, a red 'over' led, a red 'under' led
and a green just right.
I pick a neutral part of the image - usually a face if
it is a portrait, put the meter on the easel and turn
the knob until I get the green LED. Raise the head,
then open the aperture until the Green LED comes back.
I use the same meter, and a slightly different procedure.
The meter has two controls: sensitivity and time. To compensate for
change in magnification, I set the TIME control to the initial time,
meter an area that has a uniform tone, and adjust the SENSITIVITY
control for the green led. Then, change the magnification, meter the
same area and find the new exposure time by adjusting the TIME control
for the green led. This method compensates for changes in magnification
and/or aperture.
(I've glued a small knob on the sensitivity control to make it easier to
adjust.)
Chris Ellinger
Ann Arbor, MI
USA
http://www.ellingerphoto.com/
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