The image viewer app (Photos - ?) on my N900 (1.2009.42) rotates images when the N900 is turned.

With the N900 in landscape orientation, landscape images are initially shrunk so their height fills the screen. If I then turn the N900 to portrait orientation, the image is shrunk to fit the reduced width of the portrait-format screen.

With the N900 again landscape, portrait images are shrunk so their height fills the screen. On rotating the N900 to portrait, the image is rotated, but keeps the same size, so black bars are shown around all sides of the portrait image on the portrait screen.

It seems to be impossible to get a portrait image to fill either height or width of the portrait screen.

Simon.