The Panasonic Lumix DMC-TS20 has a 4608 x 3456 still image resolution which is higher than most cameras of a comparable type and age to it. Most waterproof cameras that have been around for a comparable time to it have a 640 x 480 still image resolution. In addition, this camera have still image resolutions of 1280 x 720, 2048 x 1536, 2560 x 1920, 3648 x 2736 and 4608 x 2592 and 4608 x 3072.
A 4608 x 3456 still image resolution is in fact the best still image resolution amongst all digital cameras of a comparable age and spec to the Lumix DMC-TS20.
Amongst comparable types of camera the worst still image resolution is 480 x 480.