Sigma 70-300mm -f/4-5.6 DG Macro Nikon Mount

Discussion in 'Photography Equipment & Products' started by Yalson, Sep 18, 2010.

  1. Yalson

    Yalson TPF Noob!

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    Hi all

    So I bought this lens off ebay as a barely used lens and I'm having real trouble getting the focus to be clear. This is the best I can get the focus at a distance of just over 1.5 meters Yfrog Image : yfrog.com/7fdsc6540ej

    compared with the best focus I can get from my 18-55mm kit lens Yfrog Image : yfrog.com/5xdsc6541gj I was wondering if any of you had any idea whether it's been damaged or I'm doing something wrong? I've been using it on a tripod to minimise movement. It uses manual focus only and there doesn't seem to be anything out of the ordinary with the function of the lens so I don't really understand what could be the problem. Not sure if this is the right place to post this but I couldn't see a technical thread. Any help would be great as I don't really want to have wasted money!

    Thanks
    Yalson
     
  2. Sachphotography

    Sachphotography TPF Noob!

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    No the lens just stinks. started with this lens on my d80 a while back. I hated it....


    Red edit..... Whoops..... I dont know why but I thought this was talking about the Tamron 70-300... I have the sigma 70-300
    APO and it is a much better lens than the tamron. The Tamron Stink the sigma does not.
     
    Last edited: Sep 19, 2010
  3. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

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    Well there are better lenses out there but it should certainly not be as bad as you are showing in that shot. I am inclined to think that you either have a damaged version or that the lens is out of sync with your camera body (meaning that it might be fine and sharp on the original owners camera but not upon your own body).
    Sadly fixing either way would cost you and I would expect that the cost might be more than the lenses worth even if bought new.
     
  4. Inst!nct

    Inst!nct TPF Noob!

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    +1 for the lens just absolutely sucking, it's OK for macro but anything else it fails utterly at.
     
  5. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

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  6. Sachphotography

    Sachphotography TPF Noob!

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    LOL Im sorry please read my edited post. The sigma is good the tamron is bad.
     
  7. Inst!nct

    Inst!nct TPF Noob!

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    idk haven't had good experiences with mine..
     
  8. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

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    I found that when I used it it gave far better performance when I was using a support - a beanbag on the ground; monopod; tripod (I was using a cheap £15 one at the time) - anything to help eliminate handshake really made a massive difference at the long end of the lens. Good holding technique and keeping fast shutter speed (ideally 1/420sec or faster) would also greatly improve ones results.
     
  9. edouble

    edouble TPF Noob!

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    Yalson, I have read about a similar issue to what you are experiencing. I have not used this lens personally but I have read the the mounting area on this lens is detachable. From somebody else experience they screwed off the rear section and moderately tight screwed it back on and this solved the focusing issues. Give it a try maybe this will be the solution for you to.
     

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