Quote:
Originally Posted by murraypaul
Perhaps I could say that for people using Calibre to upload books to the 505, rather than the Sony Library software, they might want to consider switching to ePub to see increased speed of opening books and changing font sizes.
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And actually, having played with it further, it isn't as positive as this after all.
Basically, when you take an action (open, change font) on an LRF file, the Reader calculates page numbers for the entire file, and caches the result. So it takes a long, constant (for a file) time the first time you do it, but is quick after that.
It seems that with an ePub file, when you take an action, it recalculates pages only up to the page you are currently on, and does not cache the result. So opening to page 1 is very quick, as is changing fonts on page 1. However, jumping to the middle of the book takes time, and it takes that time each time you reopen the book and continue reading at that point. Similarly, changing font sizes gets progressively slower as you go through the book.
If you are going to read a book straight through without switching to something else, epub will probably be faster, but if you are switching back and forth, or syncing to the PC often, it may end up slower overall.