Digital BW, The Print

That came from the same book. GAmma 2.2 is more contrsty (shadows 
darker) so 43% black will look like 50% Gamma 1.8.  RGB values of 
127,127,127 in Gamma 2.2 will look just like 145,145,145 in Gamma 1.8 
and both will show LAB of 61,0,0 and 50%K. This is a direct quote 
from the book and what got me thinking.

Your friend in Photography,

Johnny


--- In 
DigitalBlackandWhiteThePrint@yahoogroups.com, "scott_now_coming" 
<scott_now_coming@y...> wrote:
> 
> Johnny,
> 
> How did you arrive at 145? Trial and error?
> 
> Or is there a "specific reason".
> 
> Scott
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Johnny Eades" 
> <jeades1@s...> wrote:
> > 
> > This may apply only to users of Gamma 1.8 and 5000K color temp, 
> which 
> > is how my monitor is calibrated. A while back I noticed a 
> > considerable difference in my prints which looked too dark for 
the 
> > image on the screen, so I simply made a curve to raise the 
midpoint 
> > of 127 to 145; which seemed to correct the difference. I posted a 
> > question here asking if anyone had noticed a similar condition if 
> > they worked in Gamma 2.2, and received many responses. Some were 
> > well intended but none answered my question; which was not very 
> well 
> > formed by me. Today while looking through a book 
called "Photoshop 
> 7 
> > Artistry-Mastering the Digital Image" by Barry Haynes and Wendy 
> > Crumpler, I came across my answer. It dealt with creating a 
custom 
> > RGB workspace to replace the Adobe 1998 RGB workspace. This is 
how 
> it 
> > goes Edit>Color Settings>Working Space:RGB >Custom RGB>Gamma 
> > 1.8>White Point 5000K (D50) Save as JohnnyRGB.
> > 
> > This has opened the shadows (Zone I-III) considerable and now the 
> > image prints as it is on the monitor without any need of a 
printing 
> > curve anymore. Now all my image work is done at Gamma 1.8 and 
5000K 
> > color temp by default regardless if I'm in color or Black and 
> White. 
> > I'm happy now and can go out and hunt some images. I finally was 
> the 
> > high bidder on an X-Rite 810 densitometer which I think will help 
> me 
> > make paper curves for the different paper/ink combinations I'll 
use.
> > 
> > Your friend in Photography,
> > 
> > Johnny