Re: UV Filter
Re: UV Filter
- Subject: Re: UV Filter
- From: Robin Myers <email@hidden>
- Date: Thu, 11 Oct 2001 06:55:58 -0700
>
The question I have would be if you don't have a paper with UV, what harm
>
would having the UV on the unit be? IOW, if you own one, should you simply
>
leave it on all the time?
If you are only measuring paper output for ICC profiling, leaving the UV
blocking filter on the Spectrolino will not hurt anything. The only situation
you may want to watch out for is one where the paper is glossy and without a
brightener, then you may want to switch to the polarizing filter.
Since glossy materials reflect approximately 4% of the illuminant back to the
sensor for a 45/0 degree geometry (i.e. Spectrolino and many other devices),
the polarizing filter reduces this 4% significantly, letting the
spectrophotometer make more accurate readings of the color.
Robin Myers