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Quoth · 02-19-2021, 05:28 PM

The PW4 and PW3 are the same resolution. But I have compared them side by side in daylight and decent room lighting. The PW3 is both a little sharper and not so grey. I suspect it's the raised front on the PW4 so as to not have the sunken display with raised bezel. The Libra is similar grey and sharpness to the PW3 and the slightly lower resolution original H2O isn't as good at small fonts, but has the closest to white as there is no capacitive touch screen. The Mars is just as good nearly white grey as the PW3 and Libra, thus better than a PW4. It's technically the same resolution and type of eink, so I don't know why it seems a little sharper than the PW3 and Libra.
The Libra is my preferred ereader for proofing and annotation prior to a fresh edit in LO Writer. Annotations to Kobo Utilities in Calibre and copy/paste to KATE text editor window beside the main source LO Writer.

But I now read everything else, and all PDFs that work, on the Mars. I have Borrowbox on it too which saves a lot of messing.

I can't get Mars to MTP talk to Calibre (4.23), though my Android 10" tablet does after I unmount it from desktop. I have to tell Calibre to use a folder mode. I get an error if I try to remount the Mars via GUI without re-plugging USB, though that works with the Lenovo 10" tablet (Linux Mint 18.3). I'll try it on Mint 20.0 and Calibre 5.11 on the backup laptop. I have to upgrade Linux Mint 18.3 to 19.3 or 20.x by April.

02-19-2021, 05:28 PM	#12
Quoth Still reading Posts: 14,262 Karma: 105299897 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	The PW4 and PW3 are the same resolution. But I have compared them side by side in daylight and decent room lighting. The PW3 is both a little sharper and not so grey. I suspect it's the raised front on the PW4 so as to not have the sunken display with raised bezel. The Libra is similar grey and sharpness to the PW3 and the slightly lower resolution original H2O isn't as good at small fonts, but has the closest to white as there is no capacitive touch screen. The Mars is just as good nearly white grey as the PW3 and Libra, thus better than a PW4. It's technically the same resolution and type of eink, so I don't know why it seems a little sharper than the PW3 and Libra. The Libra is my preferred ereader for proofing and annotation prior to a fresh edit in LO Writer. Annotations to Kobo Utilities in Calibre and copy/paste to KATE text editor window beside the main source LO Writer. But I now read everything else, and all PDFs that work, on the Mars. I have Borrowbox on it too which saves a lot of messing. I can't get Mars to MTP talk to Calibre (4.23), though my Android 10" tablet does after I unmount it from desktop. I have to tell Calibre to use a folder mode. I get an error if I try to remount the Mars via GUI without re-plugging USB, though that works with the Lenovo 10" tablet (Linux Mint 18.3). I'll try it on Mint 20.0 and Calibre 5.11 on the backup laptop. I have to upgrade Linux Mint 18.3 to 19.3 or 20.x by April.