IXUS V2 - Out of focus, and AiAf setting

[CastorX]

moving people on my photos often are out of focus when I take pictures at night or in twilight. Do you know how to solve this problem ? Is there a setting to control the speed ?
Then I don t know what is the AiAf and AF (on/off) settings on my menu. I bought my camera in China and I don t understand the manual ! Could you brieffly explain to me how it works ?

Thanks a lot for your help

[brutal]

try taking your shots on iso400 (assuming you have that setting). In 35mm the film captures light faster so I assume its the same in digital.

you can download the australia verson of your manual (its in english) http://www.canon.com.au/products/cameras/digital_compact_cameras/powershotdigitalixusv2_mb.html