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My Sigma 17-70 is focusing behind the subject. Always. Why?!

  • 04-09-2014 10:48PM
    #1
    Cybercommando
    Banned (with Prison Access) Posts: 44 ✭


    Basically, if I take a photo of somebody, the lens will focus on the wall behind him, even though I have the lens directed to his nose! Why is my lens doing this? Is there any way to adjust it?

    The focus spot is set to the center.

    I'm using a canon 40d.

    Any ideas?

    So many photos ruined...


Comments

  • #2
    Nerro
    Registered Users, Registered Users 2 Posts: 393 ✭✭Nerro


    Cybercommando wrote: »
    Basically, if I take a photo of somebody, the lens will focus on the wall behind him, even though I have the lens directed to his nose! Why is my lens doing this? Is there any way to adjust it?

    The focus spot is set to the center.

    I'm using a canon 40d.

    Any ideas?

    So many photos ruined...

    Your lens back focuses, pritty common with sigmas unfortunately. Is it still under warranty? If so bring it back.
    As far as I know 40D doesn't have AF micro adjustment so there is nothing you can do yourself.


  • #3
    thebaz
    Registered Users, Registered Users 2 Posts: 14,162 ✭✭✭✭thebaz


    some people find Sigmas grand, but from my experience focus is always a bit soft - I've always lost money by trading up & buying the Nikon equivalent.


  • #4
    Cybercommando
    Banned (with Prison Access) Posts: 44 ✭Cybercommando


    Nerro wrote: »
    Your lens back focuses, pritty common with sigmas unfortunately. Is it still under warranty? If so bring it back.
    As far as I know 40D doesn't have AF micro adjustment so there is nothing you can do yourself.

    The lens is a good 5 years old so unfortunately no warranty. I don't recall this happening in the past.

    Do you think it could be repaired some how?


  • #5
    Kenny Logins
    Registered Users, Registered Users 2 Posts: 9,061 ✭✭✭Kenny Logins


    Cybercommando wrote: »
    The lens is a good 5 years old so unfortunately no warranty. I don't recall this happening in the past.

    Do you think it could be repaired some how?

    Yes. They can be calibrated.


  • #6
    Kenny Logins
    Registered Users, Registered Users 2 Posts: 9,061 ✭✭✭Kenny Logins


    Have a look here - http://www.boards.ie/vbulletin/showthread.php?t=2056873316


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  • #7
    Cybercommando
    Banned (with Prison Access) Posts: 44 ✭Cybercommando


    Cool.

    So where's the cheapest place I can get it done? Is there a Sigma specialist in Cork? Or perhaps Ireland? Or even a regular shop somebody could recommend? Thanks.,


  • #8
    Kenny Logins
    Registered Users, Registered Users 2 Posts: 9,061 ✭✭✭Kenny Logins


    I think Hahnel in Cork are agents for Sigma.


  • #9
    Cybercommando
    Banned (with Prison Access) Posts: 44 ✭Cybercommando


    Just called Hahnel, they're gonna get back to me on Monday when the tech is around.

    Do regular B&M camera shops do this too?

    What about sending it to the UK?


  • #10
    dacogawa
    Registered Users, Registered Users 2 Posts: 1,879 ✭✭✭dacogawa


    Leave a post on the Hamster Clinic thread, he should be able to sort you out

    http://www.boards.ie/vbulletin/showthread.php?t=2056360566&page=35


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