lens questions for a alpha 100

Discussion in 'Digital Discussion & Q&A' started by user name, Jan 10, 2009.

  1. user name

    user name TPF Noob!

    Jan 10, 2009
    Likes Received:
    hi all
    i have a sony alpha 100
    i bought a sigma DG 28-300MM 1:3.5-6.3 lens
    when i use it often the auto focus is trying to find focus, so much so i regularily miss out on a photograph
    it's done it sice i bought the lens new
    i also have a sigma DC 10-20MM 1:4-5.6 lens
    this one was also new, and doesn't do the focus search
    neither does the original lens that came with the camera
    my question, is the 28-300 lens faulty, if it's not is there an equivalent lens that won't find focus when i don't want it to, so i don't loose out on any more photographs

    help me please

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