Re: Quadtone Inks & Digital Negatives

Date: 02/06/04-12:15:34 PM Z
Message-id: <>


If I am reading this correctly, my guess is that the problem has nothing to
do with the curve you are using unless that curve does not have the endpoints
set at levels 0 and 255 or 0% and 100%, which might clip the highest ink

So, assuming that you are using an appropriate printing time and not
overexposing, then my first guess is that you are using a media setting that is not
laying down enough ink, such as one for a matte paper.&amp;nbsp; If so, try one of
the media settings such as would be used for a luster, semigloss or glossy
photo paper.&amp;nbsp; Print a Photoshop 21 step wedge&amp;nbsp; and test it.

If that does not help, the next thing to check is how you are setting up your
printer driver choices in areas other than media choice.

I never print an inkjet test strip in alt process without a standard 21 step
tablet like the Stouffer next to it.&amp;nbsp; It is confirmation of your ink
density and that your alt process is achieving the contrast range predicted.&amp;
nbsp; It provides a tremendous amount of information.

Mark Nelson

In a message dated 2/6/04 10:30:45 AM, writes:

> Sorry Mark,
> It was very late last night when I posted that. Re-reading my comments I
> can easily see how you were confused.
> Loris's followup echoes my experience exactly. I initially was using
> third-party color inks with the Canon, trying to use the spectral
> method. Although the spectral method did the best job blocking the UV,
> it didn't seem to do a good enough job, especially for VDB; and
> Kallitype was pretty pathetic as well.
> Basically the dmax of the NEGATIVE was so low, I wasn't able to get even
> close to dmax of the PRINT before the highlights became so dense.The
> highlights weren't even close to paper white. This was after some pretty
> extensive curve adjustments. In photoshop I took a 8.5x11 sheet of film,
> divided it into 5 sections with the same image (chop of a full scale
> scan of some of my work &amp;amp; a 32-step tablet and full gradient from black
> to white) with different curves applied. I then exposed and processed
> this (and several iterations) under identical conditions and was able to
> get a decent scale with some curves, but the common denominator was no
> paper white, except for a small area I always put a piece of opaque
> polstyrene to make sure the paper wasn't fogged. It was totally clean
> paper white, ruling out fogging as far as I can see.
> I am mostly frustrated because I; like Loris, don't know definitively if
> my problems could be overcome with a proper curve. I designed my own and
> used other curves available (Burkholder, Fokos, etc.) even though none
> were designed for my setup. I feel like I have a good understanding of
> the concepts involved, I know photoshop like the back of my hand (I am a
> graphic designer); but I don't have much alt/photo experience; so it can
> be frustrating.
> So far at least, the Lyson quad black dye inks seem to have the same
> problems as the spectral color negs from the Canon color inks.
> To answer your questions....
> No Stouffer tablet.
> No pre-soak.
> -Joe
Received on Fri Feb 6 12:16:01 2004

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