Live view, Cannon EOS450 xsi & auto focus

[kaber]

Can someone please help me with the following:

-Tell me how to turn on and use "auto focus" with live view using a Cannon EOS 450 xsi? I thought I had it working once then it quit.

-What's are the best camera settings to use shutter speed, file size etc. for photobooth operations. I am using fixed flourescent lighting.

Any help will be greatly appreciated.

[alexsiskahn]

sorry but you should use manual focus, it is more relable. use tape to keep lens focus ring from moving

[sspbooth]

Yikes! Is manual focus really the only option? My guests often get close up to the camera and do all sorts of things in the booth. It would be a serious hassle to have to focus the camera manually every time.

Please advise if this is the only way to focus; I know that you can do live view focusing when not in full screen photobooth mode and it is rather slow but something is better than nothing.

[sspbooth]

After adjusting my aperture I get good results with focus now..though I'm still not sure why my camera isn't auto focusing during full screen shooting. I must have something set wrong.

[alexsiskahn]

do what ever works for you, IMHO, manual focus, a small aperture and a bright strobe are the way to go.
you do NOT need to manually focus after ever shot. read up on
depth of field at
wikipedia.com