Hi, I used about thirty sets of readings from a Macbeth TR924. I'll try the second formula on them when I get the chance. I bought my PFP on eBay. It was $400 including shipping, and it was delivered the day after I won it. Best, Helen --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "joejx8" <joejx8@...> wrote: > > > Hi Helen, > > Thank you so much for your detailled answer. > > I found two formula for converting Y / RGB: > > Y=0.299*R + 0.587*G + 0.114*B > Y=0.222*R + 0.707*G + 0.071*B > > Seems that the first one match your's. Did you get your formula from > few or many (Y,R,G,B) values ? > > I have looked à PrintFix pro. Very interesting but still too > expensive for my need (about $500) :) > > Thanks again ! > > J.
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Re: Converting RGB density readings into BW density readings
2006-03-24 by Helen Bach