finalising for 3 options. tamron/sigma 17-70 F2.8 or sigma 17-70 F2.8- 4.
any suggestion among these 3? in the digital picture review i cud find that tamron 17-50 is better than sigma 17-70. would like to know more from all you senior members. will have this lens just as a replacement for kit lens and for day to day photography. if needed, will get a wide angle later on. and if zoom lens is required, will mostly opt for canon 70-200 F4L, but not at the moment.
please suggest if any 1 of these 3 is a good replacement for kit lens, considering as a walkaround lens and for its price.any flaws in the particular lens and if canon has similar lens (but not too costly.)