Unfortunately, the processing is something shameful. Just as the fact that a lens hood costs extra - and indeed around 20-25. The seen on closer inspection of cheap plastic really detracts from a great impression. But it seems to me on the sharpness and quality of lenses - because I also like about this Goof Off. The next Schnitzer - the autofocus in low light makes many problems. But that's something that I really matter is that I in my Shoots always have enough time to focus manually which of course is a breeze via LiveView in zoom mode (EOS 40D).
Overall, a little, "must-have" lens for all user of Canon cameras and for users, it Dennen nothing makes time to focus manually.
