I recommend to buy, the product is of high quality.
(the main thing is to be sober) it makes an elk 17-40 on the crop 0&APIComp=0)
It is important that it weighs little, Here you can see what you can shoot with it: http://35
The lens is not for portrait shooting, Optically it is very good.
Pros
-Good for landscapes (especially sharp at wide angle)
-Light
-Effective stub
- Convenient EGF range
-It's not a pity to take it for drinking parties
Cons
-Plastic bayonet
-Inconvenient focus ring
-Does not look solid (who cares)