Finally an objective worthy of the name!

History: I bought this lens to replace the Canon - Zoom EF-S 18-55mm f / 3.5-5.6 IS - Optical Image Stabilizer and a EOS 7D which moreover serves me creation spherical camera with a fisheye Tokina - ATX Purpose 3.5-4.5 / 10-17 DX C / AF (Canon mount).

I finally:
- The dive.
- Real depth blur on short field.
- Discreet and fast USM motor wish.
- Light, with its focal length f / 2.8, I can lower the ISO to wish and have dazzling dives.
- Very good very effective stabilizer.

The only caveats:
- It is mandatory a UV filter to prevent dust problem known that goal. I opted for a Canon Canon filter - Filter Protection 77 mm
- We have the Canon visor - Accessory for Camera - Hood objectives - EW 83J: EF 17-55 / 2.8 IS USM - 1244B001
- The price level of a target of the L moreover without the essential accessories while this is not one (it is very close anyway)

But I do not regret this purchase at all, quite the contrary!
For those who are and remain in APS-C (not compatible with full frame (24x36) - APS-C ratio 1.6) it is an acquisition that I can only recommend.