[pure-silver] Re: light for viewing prints
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Wed, 7 Nov 2007 15:48:15 -0800
----- Original Message -----
From: "Shannon Stoney" <shannonstoney@xxxxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Wednesday, November 07, 2007 5:21 AM
Subject: [pure-silver] Re: light for viewing prints
How do you measure the "lux" part or set the intensity of
halogen lights?
--shannon
Many exposure meters have conversion charts which will
indicate the light level directly in lux, for instance, my
Lunapro has a chart on the back of the meter. Some others
have conversion charts in their instruction books. There are
light level meters available, some are quite low cost
because light level is specified by OSHA for some
applications but a plain exposure meter will usually do.
For good viewing the light should be pretty bright. Many
galleries and museums use quite dim lighting for photographs
to prevent image degradation. A print for display should be
toned and the lighting should have minimum ultra-violet
content.
Color temperature is probably not critical for B&W but
is for color. As someone mentioned the standard for press
work is 5000K, a value which is supposed to be similar to
average _sunlight_, not mixed daylight. Essentially, the
color of the display light should be the same as the light
the color was judged under when the print was made.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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