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Thread: Nikon F80 AF prob with sigma HSM

  1. #1

    Default Nikon F80 AF prob with sigma HSM

    is there any known compatibility problem with F80 n sigma HSM lenses??

    cos i was trying out this 70-200/2.8 lens.. at 1st it was working fine. but after a few tries to focus, the lens refused to focus anymore. had to switch the camera off then on again b4 it works.

    so juz wondering if this is a known problem. thanks!

    Derek

  2. #2
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    Default

    Hi. I had tried to use a 70-200 HSM on my F65 too before. That time i am using press 800 film, and it is quite a sunny day. And i am in Aperture priorty. And i stupidly set the aperture to f2.8, and the camera reported that the shutter can't go any faster beyond 1/2000 sec to prevent over exposure. So it refuse to focus.

    Are you seeing the same problem. If not, then F80 shouldn't had "refuse to focus" problem with HSM 70-200.

    Hope i did help in some way.

  3. #3

    Default Re: Nikon F80 AF prob with sigma HSM

    It happens to F80 as well.
    Last year while I was evaluating the len,
    I've noticed or rather encountered that the Sigma len tends to hunt alot. - This is not not an isolated case.

  4. #4

    Default Re: Nikon F80 AF prob with sigma HSM

    Originally posted by hackie
    is there any known compatibility problem with F80 n sigma HSM lenses??

    cos i was trying out this 70-200/2.8 lens.. at 1st it was working fine. but after a few tries to focus, the lens refused to focus anymore. had to switch the camera off then on again b4 it works.

    so juz wondering if this is a known problem. thanks!

    Derek
    there was a problem with early models of the Sigma 70-200 f/2.8 with Nikon F80/F100's with the auto focus locking up.

    The problem was solved by a new chip in the lens and have heard of people getting the chip replaced in older models.

    Is the lens new or second hand?
    Last edited by james m; 4th February 2003 at 06:39 PM.

  5. #5

    Default

    Originally posted by serendipity
    Hi. I had tried to use a 70-200 HSM on my F65 too before. That time i am using press 800 film, and it is quite a sunny day. And i am in Aperture priorty. And i stupidly set the aperture to f2.8, and the camera reported that the shutter can't go any faster beyond 1/2000 sec to prevent over exposure. So it refuse to focus.

    Are you seeing the same problem. If not, then F80 shouldn't had "refuse to focus" problem with HSM 70-200.

    Hope i did help in some way.
    i was using ISO400 on a cloudy day with shutter speed ard 1/400.
    focussing was fine at 1st.. but locked after a few tries..

  6. #6

    Default Re: Re: Nikon F80 AF prob with sigma HSM

    Originally posted by mysteriousjimmy


    there was a problem with early models of the Sigma 70-200 f/2.8 with Nikon F80/F100's with the auto focus locking up.

    The problem was solved by a new chip in the lens and have heard of people getting the chip replaced in older models.

    Is the lens new or second hand?
    its a 2nd hand but in mint condition.. so guess i'll have to ask the seller to get it rechipped..... thanks!

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