F FC_Photographer New Member Apr 19, 2005 157 0 0 39 Woodlands May 28, 2005 #1 hi, though of getting sigma 70-200mm f2.8 HSM, but heard that when using it with canon DSLR, will have back forcusing problem, need callibration in order to fix the problem... Need some advise here, thx
hi, though of getting sigma 70-200mm f2.8 HSM, but heard that when using it with canon DSLR, will have back forcusing problem, need callibration in order to fix the problem... Need some advise here, thx