Digital BW, The Print

On Sunday, June 29, 2003, at 06:36  AM, kiwikale wrote:
> So far I have just run 3 test prints using the settings 
> suggested/corrected in
> earlier postings (now print space in PS "same as source", 1440x720 
> Highest
> Quality etc): Roy's QTR (2200) neutral and warm and then a straight 
> Gimp
> 4.2.5.
>
> In the 2 QTR prints I found I lost a lot of detail in the shadows vs 
> using the
> Epson driver (defining the print space in PS as the ICC profile for 
> watercolor
> paper with the matt black and no further "color" mgt).  The prints 
> were as if
> there was a loss of about 1/2 - 3/4 stop exposure.  However, the Epson 
> driver
> tends to be plagued by a degree of metamerism as we all know.  Tough 
> trade
> off as in the test print I did the metamerism was not that bad and the 
> loss of
> shadow detail in QTR was.  I guess this is because with QTR the use of 
> color
> is restricted to govern metamerism and hence tonal range is reduced?

I was able to reproduce your problem with poor shadow detail and it 
appears to be due to the Dot Gain15 gray working space you were using 
in Photoshop.  I suggest that you use gray gamma 2.2 instead to 
eliminate this problem and if your file has the Dot Gain 15 profile 
imbedded make sure it is converted to gamma 2.2 in Photoshop before 
printing.  You should then be able to get good shadow detail with the 
2200 profiles.