Sigma-17-50mm-f2.8 EX DC OS HSM Lens Review

Sigma-17-50mm f2.8 EX DC OS HSM lens is one of the most successful sigma general purpose lens for any crop sensor camera produced by sigma ever. I bought this lens 6 months ago and since then it is most widely used lens on my canon 600d. Its razor sharp . It has good Optical stabilization….