Digital BW, The Print

Terry,

Your readings that 100% patch has highest measured density is unusual. I don't have any experience with your inkset, so that may be it. Another quick check worth considering. Are you printing the QTR calibration chart at 100% ink limits?

Shilesh

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Terry" <TerryGls@...> wrote:
>
> Thanks Eric,
> 
> My 70% densitometer reading on the Harman Crystaljet is 2.34.  My readings for Epson Ultra Premium Luster are 100% - 2.53, 70% - 2.2, and at 60% - 2.05.
> 
> On the Epson Luster I'd say the the 60% ink square visually looks as dark as the 100% ink square.  Basically the same as the Crystaljet paper.
> 
> So if an ink density of around 2.1 or 2.2 is an "acceptable black" to the eye, Why do we need to push for higher Dmax ink/papers (speaking of luster/semi-gloss, etc papers)?
> 
> Terry
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "E.Neilsen" <e.neilsen2@> wrote:
> >
> > Terry, When printing out to 100%, you are trying to determine just how much
> > ink can go down on a piece of paper. Since the dmax doesn't change with more
> > ink, you stop using the ink. Why, too much can allow bleeding that causes
> > images to lose sharpness.  What does your 70% read?  Different ink sets,
> > different amounts, different printers different ink amounts. The  curves
> > posted or starting points. we all have are own set of perfect numbers and
> > preferred looks and controls. >  
> > 
> > Eric Neilsen> 
> > Eric Neilsen Photography> 
> > 4101 Commerce Street, Suite 9> 
> > Dallas, TX 75226>  
> > 
> > www.ericneilsenphotography.com
> > 
> > skype me with ejprinter>   _____  
> > 
> > From: DigitalBlackandWhiteThePrint@yahoogroups.com
> > [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Terry
> > Sent: Monday, November 23, 2009 12:40 PM
> > To: DigitalBlackandWhiteThePrint@yahoogroups.com
> > Subject: [Digital BW] Maximum Usable Black vs. Dmax - What's the Big Deal?> 
> > 
> > As I understand when printing out the Ink Separation Page in QTR, the Photo
> > Black (PK) or Matte Black ink (MK) at 100% is the maximum black. Yet
> > visually, on most Luster/Pearl/Semi-glossy papers, the 55, 60, or 65% ink
> > square is as black looking as the 100%.
> > 
> > For example, when I measure the 100% PK ink square on Harman Crystaljet
> > Luster RC paper, printed with Epson inks on my R800 / R1800 with my
> > densitometer I get 2.64. The 60% black measures 2.13 yet visually looks as
> > black as the 100%. The 60% is typically chosen to create the QTR profile yet
> > the maximum density achievable is never really used. This general
> > relationship is the same for all Luster/Pearl/Satin/Semi-gloss papers I've
> > tested.
> > 
> > Yet for the inherent difference between Luster & Matte papers what is the
> > "big deal" about high Dmax and can you really use the 100% in creating a
> > profile?
> > 
> > 
> > 
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
>