Some beutifull pics there guys, but have to say I have had very poor results with this lens and a fiend of mine has 2 of them and he only has kept them for backup for his 24-105. I know that its hit and miss sometimes with lens copies, but I found the autofocus in them to be so unreliable and when I use it on my 5D mark2, it isn't a winning combination for Modern Wedding Photography. I now use the 24-105 which isn't brilliant but its much better. The reason why im giving my 2cents about this is that I think Canon should have replaced this lens a long time ago, such lens's like the efs17-85 and the 15-85 which would be comparable are much better performers in my opinion. I just think Canon should address this because if they brought out a 28-135 mk2 I would most definatelly buy it. What do you guys think?