Digital BW, The Print

Richard,
 
I have been looking for a more systematic way of greating dot gain curves
for individual paper/ink combinations. I find too match variation between
individual images when the curve is created by visual inspection. I have the
ability to measure reflected densities from a printed greyscale but I am not
sure how to convert these densities to dot area. 
I would value any advice you could give.

[Steven Chambers]
 
  -----Original Message-----
From: Richard Wolfson [mailto:richard@...]
Sent: 15 May 2002 20:52
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: RE: [Digital BW] Custom Dot Gain



To use this Photoshop feature as its designers intended takes some tools
you may or may not have. 

First, calibrate your monitor with a monitor calibrator. Then print a
dot gain ramp and measure the printed densities with a densitometer. You
need the densities espressed as dot areas.

Finally, enter these densities in the custom dot gain setup dialog, and
save the setup with a name that reminds you of the ink set, printer,
paper, and driver settings you're working with.

Once that's done, your on-screen grayscale images should match your
printed b&w images.

Richard Wolfson



> -----Original Message-----
> From: Dennis [mailto:ghile@...] 
> Sent: Wednesday, May 15, 2002 2:42 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Custom Dot Gain
> 
> 
> Hi,
> I am using a 17" Apple Studio Display LCD. Setting the dot 
> gain at 30% doesn't quite get the on-screen image dark 
> enough. I've been using the custom dot gain curve and have 
> gotten pretty close but there is still more contrast on the 
> screen compared to the printed image. Any suggestions for 
> decreasing the appearance of contrast using the custom dot 
> gain feature? Any online tutorials or howtos? Thanks, Dennis Craven


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