Re: Converting Lab to sRGB using AbsCol looks suspicious
Re: Converting Lab to sRGB using AbsCol looks suspicious
- Subject: Re: Converting Lab to sRGB using AbsCol looks suspicious
- From: email@hidden
- Date: Thu, 5 Feb 2004 15:08:49 EST
In a message dated 2/5/04 1:36:45 PM, email@hidden writes:
>
>
What strikes me, though, is that when I look at the light outside of my
>
studio right now (1:00 pm) I don't have the impression that the light is
>
that yellow? And I know for a fact, for having measured this light over and
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over so many times over in the past, that this light is unlike 6500K. In
>
fact it's always between 5200K to 5500K.
>
Well, if I point a spectral camera at the sun I get something in the low
5000s, but if I let both the sun and the sky shine on a diffuse white sphere
(sound familiar?) and measure the sphere, I get something much higher, closer to
6500 depending on my angle from the sun. The difference between Sunlight and
Daylight; the sun is yellow, but the sky is blue... move around to the back of
the sphere, and you get skylight, not as high as 9300 without enclosure, but
pretty blue none the less.
C David Tobie
Product Technology Manager
ColorVision Inc
email@hidden
www.colorvision.com
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