Yes, unfortunately it isn´t bug, its a feature

and for me very anoying feature. For this reason I trying to find, "hack" or something what can improve zoom funcionality.
The way of croping file... yes it is partial sollution, but...
Strange, I´ve tried few utilities (Briss, Pdf tools), and results seems in the pc perfect (especially Briss is very nice, user friendly software). But I´m really suprised, that PRS-600 know(remember?) original size of the document and I still have it with original margins. I try it on several pdfs, from different sources and the result is the same. So I don´t know if I´m strange, pdf is strange, PRS is strange or what

/

But still it will be very nice if somebody (Sony??) will try to fix this zooming issue.