Quote:
Originally Posted by Haesslich
That optimization is what's missing in the Kobo software - it's like they took the basic Adobe renderer for Linux and dropped it in as is rather then optimizing it for eReader usage. As I said, Kobo really needs to put more effort into their software - if they'd done even half the work Sony did with their engine (both ADE and PDF) , they'd have the best reader in the market for both epub and PDF. The big screen and RAM are present - now they need to have the software learn to ignore the elements only used for printing books in favor of rendering what it can as efficiently as, possible.
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Sorry, but that's the case. For epub and PDF rendering, Kobo is using the Adobe RMSDK. The same Adobe RMSDK that Sony used. Except that Kobo has updated it to a much later version than Sony ever used. This is built for these types of devices. The differences in this are in the options that Kobo and Sony used. Sony chose to enable reflow, Kobo didn't. There are probably other options used, but, I don't know what they are.
The other difference is the surrounding code. The code to actually present the page of the book on the screen, to navigate around and do things like zooming in on the page. I have never used a Sony, so I cannot really compare them. But, PDF reading on Kobo's does work. It's just not perfect, and I don't think it is a primary concern for Kobo. That is elsewhere. Plus, I think they know the limitations of the devices. They are relatively low on RAM and CPU power. That means they can never be a great PDF device, so they don't try.
Having said that, Kobo do have the best dedicated ereader for PDFs. Because of the, as you said it, "big screen", there is no dedicated ereader that is comparable.