re: Epson 5500 Metamerism
re: Epson 5500 Metamerism
- Subject: re: Epson 5500 Metamerism
- From: Dan Reid <email@hidden>
- Date: Thu, 30 Aug 2001 12:39:11 -0600
On Wed, 29 Aug 2001 17:04:31 -0600, Chris Murphy <email@hidden>
wrote:
>
>Dan Reid <email@hidden> writes:
>
>
>
>Also fluorescent tubes
>
>don't excite the UV portion similar to D50 or daylight. I found engaging a
>
>D50 fluorescent tube AND and UV bulb made the perceived color a lot better
>
>than just D50 fluorescent tubes.
>
>
It's very interesting that you get better results by adding UV. I'm not
>
sure how to reconcile this because D50 is quite low in UV output, and so
>
are tungsten lights. Fluorescent lights actually have higher amounts of
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UV than D50. It's the mercury vapor content inside fluorescent tubes that
>
is the source of UV output as well as the spikes in the spectral power
>
distribution.
If that's the case then this is weird. I checked again and the prints
definitely look better with the D50 fluorescent tube and UV bulb on then
just fluorescent tube solely. When the UV bulb is engaged a noticeable
yellow/green cast is neutralized with color's *popping* a little better. I
found this was most beneficial on the Epson pigment inks and semi-gloss
paper. The Hanamuehl (?) print I have was not effected (no brighteners).
--
Dan B. Reid
RENAISSANCE PHOTOGRAPHIC IMAGING
Color Imaging Solutions Provider
http://www.rpimaging.com | email@hidden
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