Re: Viewing Lights
Re: Viewing Lights
- Subject: Re: Viewing Lights
- From: <email@hidden>
- Date: Wed, 11 Oct 2006 20:40:30 -0400
Hello Belinda,
On Thu, 12 Oct 2006 09:28:56 +1000
Belinda Beckinsale <email@hidden>
wrote:
Hi
Thanks to all that replied to my viewing light dilemma.
I am using an eye one pro with eye one share to do my
measurements. Danny,
when you mention about the visual appearance being
different even though the
colour temperature is reading correctly, is that the
same idea as the colour rendering index?
From what I¹ve read it seems to me
almost as if it is the delta e of light sources.
It is related to the CRI but the CRI alone can give good
numbers for a large range of different illuminations which
are visually quite different. A better assessment is to
combine it with a "Quality Grade" rating as determined
according to:
CIE S 012 /E:2004, Standard Method of Assessing the
Spectral Quality of Daylight Simulators for Visual
Appraisal and Measurement of Colour
You will have more details on the above in the document
already referenced and in the following pdf:
http://www.babelcolor.com/download/BabelColor_Help.pdf
(look in section: Technical Data/Spectral tools
description/ISO 3664+). However, your next comments
indicate that you already go in the general direction I
would recommend:
Also, would you recommend not only a single brand
of tubes but also a single brand of viewing lights, as I
have only got one
brand of tubes (GTI), but this one viewing light that is
a different brand is out of line with the others.
Yes, the viewing booth coatings are generally matched to
the bulbs. Which brand is ideal is another debate
altogether...
Thank you also for the link to the study
that you and Roger Breton have done. Call me a nerd, but
I am looking forward to reading it.
Not too nerdy I hope!
So I am guessing that essentially this light is probably
not going to be any
use to me, and that I should replace it with a GTI
viewing light to match
all the other ones we have within our company?
Looks like a reasonable decision!
Danny Pascale
email@hidden
www.BabelColor.com
Thanks, Bee
Belinda Beckinsale
Sinnott Bros Photography
30/2 Railway Pde Lidcombe NSW 2141
Ph (02) 9646 2711
Fax (02) 9646 5366
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