Originally Posted by Gertjan
Just before rescaling to fit the screen, you occasionally see the rotated page in the previous (portrait) zoom level. It's not a landscape 'fit width' though it may look a bit like that.
The upcoming release will provide zooming/panning options for PDF, so with a bit of patience you'll get what you're looking for.
Thanks for the clarification, especially from an IREX developer!
By the way, I am very curious about how PDF in landscape will be handled in the upcoming firmware release?