Re: Best proofing light
Re: Best proofing light
- Subject: Re: Best proofing light
- From: Roger Breton <email@hidden>
- Date: Sun, 22 Feb 2004 13:25:11 -0500
>
Tony,
>
I guess your problem stems from talking to theoretical professors instead of
>
practical engineers. :)
>
>
It is actually technically very easy to get an extremely accurate voltage
>
supply
>
for the lamps. Use an industrial switching (or linear) voltage regulated
>
power
>
supply. By utilizing two extra sensing wires, the voltage drop of the lamp
>
wires can be cancelled and if you really want to go to extremes, even the
>
socket
>
errors can be removed.
>
>
Further, the voltage will be easily adjustable to set the desired operating
>
voltage and color temperature.
>
Bertho (who know more about engineering than color management)
I'll vouch for Bertho's comments. The variation in color temperature I
observe on my Solux setup is in the order of 3% variance in color
temperature or about 150 K on 5000 K lamp (4700K/35 driven at 13.8V).
Regards,
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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