Re: Adjusting a Judge II, monitor color temperature
Re: Adjusting a Judge II, monitor color temperature
- Subject: Re: Adjusting a Judge II, monitor color temperature
- From: Matt Nelson <email@hidden>
- Date: Wed, 16 Mar 2005 15:55:54 -0600
Sounds about right. Without looking into the details, I would guess that
Don was essentially blocking part of the light with the black material
mentioned, which could decrease intensity without changing the spectrum.
Most transparent glass (and likely plastic imitations too) used for
windows, picture frames, etc. should have fairly flat spectral
transmission in the visible, but could tail off in the blue end a bit too
soon. However, each sheet would only reduce the intensity by about 8%, so
you'd need to stack a bunch of these to reduce the intensity considerably.
Note that any deviation from spectral "flatness" will get significantly
worse the more sheets you stack. I am not patenting this idea :-)
(Actually, there are commercial devices based on this idea, believe it or
not, for attenuating laser beams.) Using Al foil to block part of the
light might also work and would be reasonably fire-safe if the bulb you're
using gets hot (but don't block the vents). You could also try a piece of
perforated sheet metal or similar object, possibly available at your
favorite hardware store -- just place it as close to the bulb as practical
to minimize shadows and uneven lighting from the hole pattern. If you get
2 sheets and position them on top of each other, you can control how much
light gets through by moving one slightly relative to the other. (Now this
one does sound like a patent... oops, too late, it's public domain...) Or
if you've got time to spare and very little money, take a large piece of
Al foil and start poking holes in it -- if nothing else, it will make you
feel better by the time you're finished...
Armand
One thing I just found that certainly helps is that in this Judge II, there
are 2 5000K bulbs. I took one out. Noticeably dimmer. Not perfect, but
much better than it was.
--
Matt Nelson, A+, Network +, MCP
Prepress Production Manager
Director of Technology Resources
Nelson Printing Company
Nelson Label Company
Jonesboro, Arkansas
email@hidden
http://www.nelsonprinting.com
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