Hi all. I have been shooting a few photos recently and am usually on the 10-wide end. I found out that a few times, the focusing gives me a bit of a problem. instead of focusing at the subjects who are standing about 2m in front of me, i find that the lens is focusing at infinity , the background, so my subjects are clearly out of focussed, i believe i dont need to post a photo to further explain myself here.
For a group shot of about 3, I am shooting f5.6 / f8 and focusing on the centre person's face, so there is no reason for my lens not to register this properly.