Re: solux bulbs
Re: solux bulbs
- Subject: Re: solux bulbs
- From: Graeme Gill <email@hidden>
- Date: Wed, 13 Aug 2003 16:40:09 +1000
Abe Hayhurst wrote:
>
Philips has 2 different D50 bulbs for proofing applications. The
>
Colortone 50 is a T12 bulb (1.5" diameter), the same size and frequency
>
as the GE Chroma 50 Bulbs. The Philips TL-90 bulbs are T8 bulbs (1"
Note that these are not "D50" bulbs, they are "D50 white point" bulbs.
D50 is a specific spectrum, and these fluorescent bulbs do not
produce a D50 spectrum (a source of problems, since default instrument
XYZ values often use a D50 illuminant spectrum.)
Graeme Gill.
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