Digital BW, The Print

I'm sorry- I didn't see that you were using an 1270- which uses 
Adobe98 already. So that renders my other post about sRGB not 
applicable.

I am troubled though that you can detect posterization with a 
conversion to Adobe98, as it is much less of a discrepancy than sRGB 
creates from PS6 to PS7. It means that even a small change in the file 
conversion engine shows up visibly for you. I hope I'm not correct in 
that assumption. I had a tiny amount appear myself when I used Adobe98 
on my Win98SE/1280, enough to make me prefer PS6 over 7 for printing, 
but barely. So this makes two of us, but it is apparently much worse 
for you. I can live with mine, although I seem to have an odd 
microbanding fluke to investigate.

In your file where it shows up, if you follow the workflow through in 
both PS6 and PS7 what numbers do you get for the histograms in each 
for mean, SD, median? It would be interesting to see how big a change 
happens. Martin, Carolyn, etc and I were getting no or at most very 
tiny discrepancies with Adobe98, a little more with sRGB. Also folks 
suggested very good things to check for in the previous thread on this 
topic- such things like using "print with preview" in PS7 to make sure 
destination space is Adobe98...
Jim H.




--- In DigitalBlackandWhiteThePrint@y..., "Ricardo Lagos" 
<ricardo@s...> wrote:
> I am a bit confused by the discussion .. so let me state what my 
setup and
> workflow looks like -- it doesn't seem to be the same as the one 
eveyrone
> else is talking about
> 
> OS: MacOS X
> 
> Scans are done to Grayscale (2.2 gamma) tif files .. (using vuescan) 
from a
> Canon fs4000 (35mm) (16 bit scans)
> 
> All manipulation is done in the GS 2.2 gamma space. using PS7
> 
> ----------------------
> 
> Using PS6 i convert to RGB (adobeRGB -- per the new PaulRoark 
workflow) (for
> a 1270 printer)
> 
> ----------------------
> 
> Back to PS7 - apply curves (i like the nw curve) ...
> 
> print on 1270 using MIS VM-----------
> 
> ------------------------
> 
> this solved the posterization i was getting -- which i belive was 
caused by
> the translation of GrayScale to adobe RGB by PS7..  (the thread i 
think was
> talking about translating Greyscale to sRGB -- which i was not 
doing)
> 
> ------------------------
> 
> -- ricardo