Vuescan Descreen dpi setting

[Maris V. Lidaka Sr.]

I am scanning a B&W image from a (quality) glossy magazine at 600ppi on a
flatbed Epson 1200U scanner.

The default (and per the help file the recommended) Descreen setting is
75dpi - I've scanned at 75, 60 and 40 Descreen dpi settings and so far the
60dpi looks best but I'm not happy yet.

Any suggestions or recommendations? The Help file info is rudimentary.

Maris

 

[CSM1]

I am scanning a B&W image from a (quality) glossy magazine at 600ppi on a
flatbed Epson 1200U scanner.

The default (and per the help file the recommended) Descreen setting is
75dpi - I've scanned at 75, 60 and 40 Descreen dpi settings and so far the
60dpi looks best but I'm not happy yet.

Any suggestions or recommendations? The Help file info is rudimentary.

Maris

Read Wayne Fulton's excellent tips on scanning.

Scanning Images in Books/Magazines/Newspapers
http://www.scantips.com/basics06.html

And check out the info on the next page.

 

[Maris V. Lidaka Sr.]

Yes, I'm familiar with moire and with www.scantips.com (I even purchased his
book - the 1st Ed.) about a year ago, but thank you for reminding me - there
is some new material there..

My question is more specific - Ed's Help file says " Set this option to the
approximate number of dots per inch of the "screen" used when printing the
media you're scanning. The default value of 75 seems to work well for most
media."

Wayne suggests that magazines are printed at 133 or 150 lpi screened
patterns - would that, then, not be more appropriate a setting to use for
the Vuescan "Descreen" setting?

It's late now, but I'll run some more scanning tests tomorrow.

Maris

 

[AAvK]

You'll never really know what dpi of ink any given printer will use for any
given magazine, unless you can find out from them via an email or telephone
call. No doubt they won't tell for copyright. You just have to try out all the
different dpi settings, and include custom ones you create until it looks good.
No doubt if it is a glossy, higher number, but the numbers should match as
close as possible to exact.