Re: Light bulbs
Re: Light bulbs
- Subject: Re: Light bulbs
- From: <email@hidden>
- Date: Thu, 18 Jan 2007 22:50:56 -0500
Rick,
You may be interested in a small report Roger Breton and I
made on the subject:
http://www.babelcolor.com/download/Light_under_control_2005-11-08.pdf
or look for the "Light under control" pdf
in the following page:
http://www.babelcolor.com/main_level/Tutorials.htm
We measured, among other things, the index Graeme referred
to in his reply (Metamerism Index and Quality grade
according to CIE S 012) for a few illumination setups.
Danny Pascale
email@hidden
www.BabelColor.com
On Wed, 17 Jan 2007 12:32:04 -0500
"Rick" <email@hidden> wrote:
Spectral Gurus!!
I recently purchased new bulbs for our 3 light booths
as well as for
the booths that are press side. (40 bulbs in all) After
installing all of them I realized that our GATF/RHEM
indicator looks like a zebra under them.(It did not show
any stripes at all on the previous bulbs from
Normlicht... but they had been in for over 2500 hours so
they were due to be changed) I ordered these from a local
lighting company and they were quite economical compared
to the ones from Normlicht. They are made by Sylvania and
say 5000k on the bulb.(Exact product is FO32/750/eco) I
took my trusted eye one to the booth and took a ambient
reading and it reads around 4830k or so and my CRI index
in Eye one share is a paltry 76. I am also surprised by
how mountainous the spectral analysis is. Are there any
options other than spending the big bucks at Normlicht or
Macbeth? Thanks in advance for any advice.
Rick Kortemeier
Sr. Color Specialist
Integra
616.459.4142 ext.1169
email@hidden
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