I have done a bit more research on this and I think that the %s given might be old hat. The speed at which information changes from books, articles, even internet blogs, can be inaccurate. I checked with another source and a more current conversation indicates a reduction based on HSL; Hue saturation and Lightness. And with all the programs that are active; CS 1-4 and before it is quite possible that many answer will remain correct. I pointed this out about internet information in a previous thread and one member took great offense. But it remains a real aspect of the digital information and digital processes. The actual conversion is going to be an elusive answer unless some can get Adobe to post it for specific version unless that information is in Freeman's book. Eric Neilsen 4101 Commerce Street, Suite 9 Dallas, TX 75226 214-827-8301 www.ericneilsenphotography.com SKYPE ejprinter From: DigitalBlackandWhiteThePrint@yahoogroups.com [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Dana H. Myers Sent: Thursday, January 08, 2009 10:56 AM To: DigitalBlackandWhiteThePrint@yahoogroups.com Subject: Re: [Digital BW] Re: B+W Scans from RGB Scanners Louis Dina wrote: > According to _mastering black and white digital photography_ ( http://www.amazon.com/Mastering-Black-White-Digital-Photography/dp/157990707 5 ), Photoshop uses 30% red, 59% green and 11% blue, which jives with the 30/60/10 number. Desaturate gives equal weight to all the channels. Dana . Image removed by sender. [Non-text portions of this message have been removed]
Message
RE: [Digital BW] Re: B+W Scans from RGB Scanners
2009-01-08 by Eric Neilsen
Attachments
- No local attachments were found for this message.