I agree this would be nice (since built in image viewer detects 'tall' images and rotates automatically. The detection should be easy... if height > width then rotate.

Obscura did this via a patch, so if it means that much you might want to use obscura instead of nokia image viewer.

You'll have to download (install) obscura, then download the patched Image.py from here :
https://garage.maemo.org/plugins/scm.../?root=obscura

and overwrite the existing image.py in your obscura install (i forget the directory). This will need root access.

Still would be nice for quiver to add this. Perhaps file a feature request in the garage page for it?