Hi - hoping someone can help. I am a totally new to photography -- when i use the zoom i have serious issues focusing -- the focus goes in and out and then out again -- like it can't make up its mind ow something -- then stays mostly blurry -- even if i do the halfway shutter thing ( like it says in the manual) -- then in some shots the focus will be right on - and the pic is fantastic -- is this all due to lighting conditions? haven't tried any outdoor shots yet ...

umm, what the hell is apeture (sp?) -- told u i'm new