It was indoors at night, with just one overhead light in the room when I first noticed the flicker.. Just after I updated the firmware it started to flicker.. I noticed the battery was somewhat low, shut camera off and put it away.. The next day I took the camera out to see if I could figure out whats going on. Put a new battery in it, started it up, and no flicker.. Indoors same overhead light, but during the day. I just now picked up the camera, in the same room, with same light at night. And the flicker is back. Not when I press the shutter half way this time. But when I release it, after being pressed half way.. Ive searched online, and havent really found much about this, other than it seams to be popping up more, and more now..