Register Guidelines E-Books Search Today's Posts Mark Forums Read

Go Back   MobileRead Forums > E-Book Formats > PDF

Notices

Reply
 
Thread Tools Search this Thread
Old 12-09-2020, 09:53 AM   #46
JSWolf
Resident Curmudgeon
JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.
 
JSWolf's Avatar
 
Posts: 61,282
Karma: 82128430
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Aura H2O, PRS-650, PRS-T1, nook STR, iPad 4, iPhone SE 2020, PW3
Kindle Papwerwhite 7th generation (PW3) - Firmware 5.13.3 - Screen resolution 1072 x 1448 6" screen
Click image for larger version

Name:	screenshot_2020_12_09T13_38_24+0000.png
Views:	27
Size:	36.0 KB
ID:	183881
Click image for larger version

Name:	screenshot_2020_12_09T13_43_28+0000.png
Views:	32
Size:	49.2 KB
ID:	183882

Kobo Aura H2O -Firmware 4.25.15875 - Screen resolution 1430 x 1080 6.8" screen
Click image for larger version

Name:	screen_003.png
Views:	28
Size:	31.5 KB
ID:	183884
Click image for larger version

Name:	screen_004.png
Views:	30
Size:	55.9 KB
ID:	183883

Last edited by JSWolf; 12-09-2020 at 10:01 AM.
JSWolf is offline   Reply With Quote
Old 12-09-2020, 09:55 AM   #47
JSWolf
Resident Curmudgeon
JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.
 
JSWolf's Avatar
 
Posts: 61,282
Karma: 82128430
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Aura H2O, PRS-650, PRS-T1, nook STR, iPad 4, iPhone SE 2020, PW3
Now that we have screen grabs from Kobo and Amazon with current firmware, The Kobo still dithers better then the Kindle.
JSWolf is offline   Reply With Quote
Old 12-09-2020, 01:21 PM   #48
willus
Fuzzball, the purple cat
willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.willus ought to be getting tired of karma fortunes by now.
 
willus's Avatar
 
Posts: 1,152
Karma: 9900000
Join Date: Jun 2011
Location: California
Device: iPad
Quote:
Originally Posted by JSWolf View Post
Now that we have screen grabs from Kobo and Amazon with current firmware, The Kobo still dithers better then the Kindle.
Are you commenting on the color-to-grayscale mapping or on the actual dithering between the two gray levels within each square? It looks like the kindle is just using a different algorithm (Floyd-Steinberg) than the Kobo (uniform)--see attached. I think whether one is better than the other is somewhat subjective.
Attached Thumbnails
Click image for larger version

Name:	kobo_dither.png
Views:	28
Size:	8.7 KB
ID:	183885   Click image for larger version

Name:	kindle_dither.png
Views:	28
Size:	9.5 KB
ID:	183886  
willus is offline   Reply With Quote
Old 12-09-2020, 04:11 PM   #49
JSWolf
Resident Curmudgeon
JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.JSWolf ought to be getting tired of karma fortunes by now.
 
JSWolf's Avatar
 
Posts: 61,282
Karma: 82128430
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Aura H2O, PRS-650, PRS-T1, nook STR, iPad 4, iPhone SE 2020, PW3
Quote:
Originally Posted by willus View Post
Are you commenting on the color-to-grayscale mapping or on the actual dithering between the two gray levels within each square? It looks like the kindle is just using a different algorithm (Floyd-Steinberg) than the Kobo (uniform)--see attached. I think whether one is better than the other is somewhat subjective.
The Kobo is better looking at the two images. The contrast is better on the Kobo image. The contrast on the Kindle image is rather poor. Also, I've seen manga on a Kindle and a Kobo and the Kobo had better contrast.
JSWolf is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Screenshots Jyohomson Kindle Developer's Corner 7 07-31-2014 02:06 AM
Aura Screenshots on firmware 2.9? mmatting Kobo Reader 4 09-18-2013 08:27 AM
Fonts - 21 ScreenShots Japes Sony Reader 38 08-06-2011 05:46 AM
iPad screenshots Nate the great Apple Devices 5 04-05-2010 01:33 AM
Times Reader 0.1.0.00 beta released (screenshots attached) Alexander Turcic News 3 11-23-2006 02:48 PM


All times are GMT -4. The time now is 06:22 PM.


MobileRead.com is a privately owned, operated and funded community.