Originally Posted by jswinden
On screen keyboard is disabled. To refresh screen press and hold the Keyboard button then press the Back button.
Like I said the Picture Viewer is flaky. I suspect they will improve it with FW updates.
I don't expect it will ever be fixed—it has always been 'flaky', and it has never even risen to the level of being a documented feature. Now even its limited functionality has been crippled, at least for K4.
Of course you can send the image .zip to the send-to-kindle address and convert to .azw, then any Kindle or KApp can view it (and some apps will even be able to zoom/pan). Or put them in a PDF if you want to pan/zoom larger images. That's the 'official' image viewing feature.
It will be interesting to see how Kindle Touch deals with this, and also with PDF viewing: will double-tap zoom in/out, will drag pan?