[xtr]

本人有支Canon EF 70-300mm f4.0-5.6 IS USM.....早前又員買左支Canon EF 70-200mm f/2.8L IS USM發覺...兩支唔太夠長焦又想話加增距鏡..唔知用邊類型及用在那一支才好...但如果賣左支Canon EF 70-300mm f4.0-5.6 IS USM.之後買番支Sigma APO 170-500mm F5-6.3 DG or....Sigma 80-400mm F4-5.6 EX OS.......俾d意見.....

[平凡的地夫]

如果你錢夠又要求高一D , 放左支70-300 再買枝300/2.8 定焦加個2X Tele
咁就搞掂~
冇乜錢的話, 換枝170-500 都ok o既~不過天色暗少少就煩D 囉~