Digital BW, The Print

Paul, in making a print of a scenic today, with an absolutely grainless sky, I
got a very obvious dot/grain problem evident all over the whole print, that
looks horrible to the eye, and extremely horrible with a loupe.

The before and after images I printed, same printer, (different photographs)
same curve (the new 16 cool curve) showed no grain or dots at all. Then I
reprinted this image, and once again got the terrible grain. Have you any idea
at all of what could be causing this to happen to just the one file?

Thanks,

Jerry





Paul Roark wrote:

> Jerry wrote:
> >But how do you know what numbers to type in?
>
> There is definitely some trial and error.  After printing a step wedge test
> file, scan it.  Use levels to put the 0% and 100% where they should be.
> Then read the values of the other patches.  If, for example, the 95% patch
> reads 97%, try putting a 94 in the 95% box of the Transfer Function.  (It
> tends to overshoot.)  Then print with it and see what happened.
>
> Don't expect to get the exact values all the way.  If you make too many or
> too radical adjustments in the Transfer Function the ramp get ripply.  So,
> go easy and slow, saving the files as you go, and marking the test prints so
> you can conclude after you've gone too far which made the best print.
>
> Paul
>
> >
> >
> > >But what about transfer curves? How do They work?
> > >What would they offer that the rgb curves wouldn't?
>
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