In order to complete my range of lenses, I needed a wide angle lens. So after reading all the reviews I decided to go for this Tokina and I am very happy with it. Great solidly built lens and IQ is better than I expected,will post pictures once I have the time to go out on a full outing with it. Now I have 12-200mm in 3 great lenses. other accessories I have added to my inventory includes a Cleon remote trigger, a remote flash trigger and finally a Dry-Cabinet to store all my precious equipment.