From: James Romeo (jromeo@iopener.net)
Date: 05/05/00-07:21:04 AM Z
I wonder if strobe light could be used for a light in an enlarger for alt-process.
There can be a lot of light from strobe the color temp is daylight. Is eny of it UV?
I have often thought of it as I work with the 8x10 enlarger.
The modelling light could be used for setup and exposer by number of flashes.
The ???? is there UV I do not know.
James Romeo
----- Original Message -----
From: alt-photo-process-l@sask.usask.ca
To: "INTERNET:alt-photo-process-l@skyway.usask.ca"
<alt-photo-process-l@sask.usask.ca>
Subject: Gum prints by enlargement
Date: Fri, 05 May 2000 07:58:19 -0400
Replies:
1) The inverse square law applies whenever a light source spreads out with
distance, as it does with enlargement. The idea is that a 1x1 inch square
of light becomes a 2x2 inch square of light when you double the distance
to the paper. A 2x2 inch square of light is 4 times the area of the
original square. Each 1x1 square therefore receives 1/4 the original light
- and needs 4x the exposure to compensate.
2) Light is a continuum. Gamma rays, X-rays, UV light, Visible light, IR
light, Microwaves, and Radio waves are all the same thing at different
frequencies. Thus I see no problem calling UV a light. Cheers, Ed
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