View Single Post
Old 08-28-2010, 01:23 PM   #4
jswinden
Astrophotographer
jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.jswinden ought to be getting tired of karma fortunes by now.
 
jswinden's Avatar
 
Posts: 5,750
Karma: 7120000
Join Date: Sep 2006
Location: Everman, Texas
Device: Kindle Voyage, iPad Mini 2, iPhone 6+, Nexus 7.2
I'm not sure where tomsem got his assumptions, but the contrast settings do help out with scanned black and white documents that were converted to PDFs.

Here is a complete set of five screenshots showing a scanned image PDF as viewed in all five contrast settings: Lightest, Lighter, Default, Darker, Darkest.

...
Attached Thumbnails
Click image for larger version

Name:	1-pdf-lightest-contrast.gif
Views:	706
Size:	33.7 KB
ID:	57280   Click image for larger version

Name:	2-pdf-lighter-contrast.gif
Views:	511
Size:	35.2 KB
ID:	57281   Click image for larger version

Name:	3-pdf-default-contrast.gif
Views:	502
Size:	36.5 KB
ID:	57282   Click image for larger version

Name:	4-pdf-darker-contrast.gif
Views:	460
Size:	35.5 KB
ID:	57283   Click image for larger version

Name:	5-pdf-darkest-contrast.gif
Views:	584
Size:	34.1 KB
ID:	57284  
jswinden is offline   Reply With Quote