Re: Measuring "standard IT8.7/4 Random" on iSisXL using ColorPort 2.0
Re: Measuring "standard IT8.7/4 Random" on iSisXL using ColorPort 2.0
- Subject: Re: Measuring "standard IT8.7/4 Random" on iSisXL using ColorPort 2.0
- From: Graeme Gill <email@hidden>
- Date: Sat, 22 Jan 2011 14:55:26 +1100
Roger Breton wrote:
Thank's again for this follow-up reply but, correct me if I'm wrong, how can
the white LED provide "UV-cut" measurements : because the illumination only
cover part of the visible spectrum, does not reach into the UV?
Yes. Standard white LED's are actually a blue LED with phosphor to cover
the longer wavelengths. LED's typically have a quite narrow bandwidth,
so the cut-off from blue to UV is quite sharp.
<http://ledmuseum.candlepower.us/ninth/l1d1.gif>
Graeme Gill.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden