Hi all,

Recently I went to the Aquarium and I was trying to get some clear shots of this Sea Jellies. But it seems i can't freeze the subjects. With the 20D do I use the TV mode to do that? What setting I should use for such low light situation. Do I need to use a tripod to capture it? I was using the 24-105 L /f4 lens.

Any help and adivse will be great. Thanks.

If they're moving a tripod will not help.

Use whatever apeture and/or ISO it takes to get a decent shutter speed.

Yes, bump the ISO. And if you find yourself still needing faster glass, check out the 50 1.8, its a great yet cheap little lens. (or cheap as lens prices go anyway)