Digital BW, The Print

Take a file in greyscale with gamma 2.2 space, preferably one with a 
lot of dark to it. Convert it to sRGB in both PS6 and PS7 Each time 
write down the histogram statistics (mean, median, std deviation). See 
how they differ in PS7 but not in PS6? That's the bug. Try converting 
to Adobe RGB 98 space. See how they now will differ very little, if at 
all in either version? So if using Paul's curves and PS7, avoid 
converting to sRGB space- use Adobe RGB 98.
Jim H. 




--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Vincent Orlando 
<orlandovl@h...>" <orlandovl@h...> wrote:
> 
> What bug are you talking about? I have been using PS7 and converting 
> both ways nd using Paul's curves with no problem
> 
> Vinny
> http://www.wulfsden.com
> 
> 
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Editor P.O.V. 
> Image Service" <editor@p...> wrote:
> > I use both on the same machine in WinXP Pro// Just make sure you 
> don't 
> > install them to the same directory.  Oh, and you can't open one if 
> the 
> > other is already running.. It just never opens the second app.
> > 
> > ... BUT with the KNOWN Greyscale to RGB conversion bug, I use 6 
for 
> all 
> > my B&W to RGB conversions, as well as most of my Greyscale work... 
> I 
> > have this silly thing against unintended posterization or muddy 
> prints.  
> > 
> > If you look back through the archives here you will find the 
> conversion 
> > bug is documented AND a problem if you are using the Roark 
> workflow. 
> >  Adobe has said they will NOT fix the bug in 7.x..
> > 
> > Keith
> > 
> >  
> > 
> > "Just some guy," and caretaker of the Multiverse's largest EPSON 
> printer 
> > User Community (highly recommended by Vogon Poets and MegaDodo 
> > Publications), at:
> > 
> > http://groups.yahoo.com/group/EPSONx7x_Printers/
> >  
> > "For the rest of you out there, the secret is to bang the rocks 
> together 
> > guys"
> > 
> >  
> > 
> > 
> > { The P.O.V. Image Service Website is still at http://www.p-o-v-
> image.com/ }
> > 
> > 
> > 
> > 
> > 
> > 
> > [Non-text portions of this message have been removed]