[Milsurplus] scanning old photos/books

[WA5CAB at cs.com]

Oops.  Wammes is absolutely correct.  It was scanned in 24 bit True Color.  I 
looked at the Properties to see what the resolution is and forgot to check 
that.  Simply changing it to 256 gray scale, although increasing the file size, 
vastly improved the appearance.

In a message dated 7/17/2007 3:19:39 AM Central Daylight Time, 
wammes at greenradios.com writes: 
> I agree fully with Roberts treatise on advanced scanning - with one or 
> two remarks.
> First, your sample turns out to be scanned in color. This makes it way 
> too big, as there is no color in the original. And even is this sort of 
> picture is called half tone - implying grays - in actual fact it is a 
> rendering of grays by using bigger and smaller black dots, as is usually 
> the fact with printed pictures. My preferred route is to scan in pure 
> black and white at a high resolution and then indeed print at that same 
> resolution. Play around with the threshold in order to get the best 
> representation of the picture, so the dots do not turn out smaller or - 
> worse! - start running together. This way you preserve (most of) the 
> screening of the picture. There will always be artifacts, for instance 
> because the dot-pattern does not align perfectly with your scanner. But 
> results can be quite good.

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at houston.rr.com> (Backup email)
   
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