Quote:
Originally Posted by davidfor
I would have said that since the firmware changes early last year, they were the same. But, I probably haven't been reading the same sideloaded books on multiple devices to compare. I haven't noticed any differences with purchased books as they sync. I can't see any problems on the Glo HD for the book I'm reading, but I don't have any other devices with me to compare.
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I seem to remember we had a short PM chat about this at the time I was experimenting. My observation is that whatever changes Kobo have made to image processing in the last 18 months, it has not cured the 'banding' on a GloHD screensaver.
I've attached a test epub you can play with if you want. It contains a cover full of smooth colour graduations.
The screensaver (sent as B&W, keep aspect ratio by calibre) on a GloHD is full of banding. The same book has a very smooth screensaver on a KA1. On an H2O it's not quite as smooth as the KA1 but it's still very good. The ClaraHD is very slightly better than the GloHD but still full of banding.
I transferred them all as kepub. When viewing the cover as page 1 of the kepub, rather than as a screensaver, the GloHD is much smoother, but still not as good as the KA1. The ClaraHD is smoother than the GloHD but not as good as the KA1.