17-55mm - Send it in for service??

I have just 7 days left on my warranty for my 17-55 f2.8 IS, should i make use of it and send it for calibration...... i'm not actually unhappy with it's performance but i don't think it's the sharpest tool in the box so to speak and have wondered in the past if it has a smidgen of backfocus [not bad enough for me to really worry about]. Anyway, the question is, do you think i should send it in and see if it comes back any better?

why not? ur gonna kick urself in the face one day if u find out it was backfocusing but now you have to PAY for its repair. just send it in.

hey its better to be safe than sorry and even if nothing is wrong it will still come back the way it was sent off, this is a win-win situation and you have nothing to loose except for a couple days with the lens

I agree with the others but be careful as they might make it worse and by the time you get it back it will be out of warranty

hmmm.... yeah one of my worries was that it may come back worse.... ah well, i think i'll give them a call and take the chance. It might come back with new life!