Digital BW, The Print

Ferdinand ...

I do use Roy's 'QTR-Gray Lab' space and it is in that space that I am
producing the distinctly nonlinear luminance results I reported in my
earlier post. You make a good point about the use of the 'Ink Limit'
and 'Gamma' controls.  However, what I think should be the primary
objective is to have a profile that delivers the widest tonal scale
for the ink/paper/printer combination and is linear throughout its
range.  Then the 'Ink Limit' and 'Gamma' controls would allow us to
exercise creative departure from the profiles basic starting point.

Thanks for your response to my post.

Fred Drury,
Markland Imaging.
 
--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "ferdinand_paris"
<ferdinand_paris@y...> wrote:
> 
> Like Fred, I don't fully understand soft-proofing on a PC either.  I
> didn't think that the new profiles solved that problem on a PC.  I 
> thought that what they did was solve the problem of "linearising", and
> thereby solved the problem of compression in the darker tones, and
> images looking a little dark & flat.  Even using the profiles, I still
> find my images a little dark, and have to use some of the controls in
> QTRGui(ink limit adjustment and gamma adjustment) to lighten things up
> a bit.  Maybe I need to check the black and white points on my 2100.
> 
> If I've misunderstood something, happy to stand corrected.
> 
> F_P
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Johnny Eades"
> <jeades1@s...> wrote:
> > 
> > Hello Fred, 
> > 
> > I take it your monitor is calibrated using some kind of device and 
> > software combination. This is a must to produce consistent and 
> > predictable results from any workflow. Go to 
> > www.zuberphotographics.com and download the Black Point/White Point 
> > information for the printer. Do the procedure to determine what
> Black 
> > Point is needed to allow you to print a full tonal ranged image,
> and 
> > then do the procedure for the White Point to do the same thing. You 
> > may be surprised what this simple procedure can do for your
> printing 
> > results. I found that I had been using the Zero point to indicate
> my 
> > black point and after doing the BP/WP I now use BP=19 and WP=252.
> Do 
> > this test on all the types of paper you use.
> >  
> > 
> > Roy has created a gray working space to enable softproofing from
> the 
> > working gray workspace. Download from Roy's website the two
> QTR-Gray 
> > Lab and QTR-Gray Lab Matte/Photo files. After you have image ready
> to 
> > convert to Grayscale, go to Image>Mode>Convert to profile and
> choose 
> > the Gray Lab; then immediately after converting it to Gray Lab; 
> > convert it AGAIN to Gray Lab Matte to have final access to your
> soft 
> > proofing procedure. Further adjustments can be done to the image 
> > before saving and printing. The results from the BP/WP testing can
> be 
> > put into a curve that can be applied to the Grayscale image (Gray
> Lab 
> > or Gray Lab Matte/Photo) and the resulting image will print with
> the 
> > minimum amout of ink to show total black on the paper used and the 
> > maximum amount of ink to show total white. I hope your results will 
> > please and surprise you. Mine surely did when I followed this
> system.
> > 
> > Your friend in Photography,
> > 
> > Johnny