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  1. J

    Sigma 300mm f2.8 EX APO HSM

    Newbie to BF. I would like to know what would be best to buy, the sigma 120-300mm 2.8 (probably without OS) or the 300mm 2.8 EX HSM....i would like to use them both with TC's. I gather that the 120-300 is more more versatile but does it perform better than the 300mm when attached to TC's. Camera...
  2. J

    HELP PLEEEEAAASSE Sigma 300mm 2.8 prime or sigma 120-300 2.8

    Hi there, I am new here, about 10 mins old. Brief listing of my gear, Pentax K-r, 100mm macro 2.8 WR, 50mm f1.7 A, 35-70mm f4 macro, 85-210 f3.5 and 18-55. Canon 1Ds mkII and 22-55mm f4-5.6. I have owned the canon for about 3 weeks now, the pentax is what i used to do everything with. Telephoto...
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