Eldar said:
I have been out walking with this lens a couple of times now and my initial conclusion still stands; At 11mm, this is the most challenging focal length I have ever used. <snip>
I have read loads of raving reviews and comments about this lens, but, unless I am lacking a wide angle gene, they´re not willing to admit that they are struggling also. It would be interesting to hear how some of you experience this.
<snip>
Eldar, yes, you are absolutely correct and I don't think anyone can reasonably say that 11mm is anything other than very difficult.
It takes a lot of practice and the right subjects to make the most of shooting this wide, and even then, it's not easy. In your flower shots, the only suggestion would be to get the lens much closer, similar to the first shot in the post below. The front element was about 2-4cm away from the flowers in the immediate foreground, even though it seems more like 10cm or so. Take a look at these samples from me, and others, in this thread for the Sigma 12-24, most of them shot at 12mm. It's almost as wide and just as challenging. The samples in the first post demonstrate the two things I talked about before - shooting level but at an angle to add drama or shooting perfectly level on all axes for buildings and such. Also, while you can certainly shoot handheld, your best results will require a tripod. Keep using it, I think you'll really like it once you get the hang of it and get a shot that you're happy with. Hopefully the Sigma 12-24 thread will give you some ideas/inspiration
http://www.canonrumors.com/forum/index.php?topic=20725.0