[moz]

I'm trying to work out the actual image display area now. The 800x600 screen has border for the battery capacity and so on, so images should be smaller. Wikipedia says 754x584 pixels, no idea where that comes from but an image that big definitely displays at full size. It looks as though there's a few more pixels available but I'm having to create sized images in steps to find that out. After much playing I'm going to settle for 760x590 as my preferred image size.

For those that are interested I've attached a couple of photos of the display. One is the "1 of 4" area that you get when displaying images, and the second is part of the battery charge level indicator (more magnified than the first). I was looking at these to try to figure out where the edge of the image display area is, but if you look at those it's obviously not that easy to see where exactly the edges of the displayed pixels are. The "5" is part of the test image, it's black border, white fill on a light grey background. The other two you can all look at on your devices.

The "1 of 4" text is about 12mm long, the battery outline is about 2mm across the edges of the white lines and top edge of the 5 is about 2.4mm long.