For a digital camera...does anyone know which is better, one that uses lithium batteries or AA batteries?

lithium is rechargeable.(lith-ion) get those w/ highest ma rating (2200) & $10 recharger & you are all set
the alk option handy when you need to keep shooting.
so buy the one that uses aa cells.
lith only cameras sell more product for the mfg. Nothing to do with Quality----
NOTHING at All

I'm assuming you mean AA lithium batteries or AA alkeline. AA is a size.

A digital camera that uses Lithium AA will also use regular AA batteries.

The advantage to a camera that uses AA is you can use rechargeable but if you are away from a charger & your batteries go dead you can but AA anywhere.

get the one you shake, it lasts 15 minutes for an hour of shaking...

lithium lasts longer and costs more than standard double A batteries. cameras with lithium tend to be of higher quality.

if you mean the small, block shape lio-ions found in the latest digital camera, lio-ion are going to last long and be rechargable many times. although, if you run out and don't have a spare, you won't be able to go somewhere fast and replace it with a AA.

There are litium AA batteries that aren't rechargeable, my Kodak used them. You couldn't use standard AA alkaline batteries. I now use a Canon Powershot, it takes 4 AA alkaline bateries - it's a bit bulky, but it's great.