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Thread: d300s focus problems

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    Member Herp Affinity's Avatar
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    d300s focus problems

    Hi all. I have owned a d300s for a few months now and used it fairly extensively. Only recently though have I used the continuous focus function. First thing I noticed after using continuous focus flat out that it stopped focusing after 10 minutes or so of use. I had to turn the camera off for a few seconds turn it back to single servo and then switch back to continuous. I thought it may have been my lens (120 - 400m sigma) however I switched to another lens and the same thing happened. Secondly I notice that when i switch my camera on when it is in continuous focusing mode that it makes a squeeking noise. When I turn the camera on in single servo mode the squeeking noise is not present. My questions is, is this a problem with this camera or may it be a faulty item. Any input is appreciated.
    Kind Regards,

    Herp Affinity

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    Moderately Underexposed I @ M's Avatar
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    It may be a case of 'dirty' electrical contacts between the camera and lens when using AFS / HSM lenses.

    Prolonged use of electrical equipment can result in a build up of heat, heat increases electrical resistance.

    Try cleaning the lens and camera body contacts with a microfibre cloth.
    Andrew
    Nikon, Fuji, Nikkor, Sigma, Tamron, Tokina and too many other bits and pieces to list.



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    Thank you for your response I @ M. I have tried your suggestion with no success. I think it might be time to send it back to Nikon as the squeek is now present across all focusing modes. Can anyone who has a D300s confirm if their unit makes and audible "squeek" on start up?

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    Nope can't say I have ever experienced any "squeeking" on start up....mine makes no noise what so ever....only noise I ever get is from the lens itself when focussing....

    Roo
    Call me Roo......
    Nikon D300s, Nikon 35mm 1.8 DX, Nikkor 50mm 1.4 Af-S, Nikon 18-200mm VR, Nikon 70-200VRII 2.8, Sigma 105 Macro, Sigma 150-500mm f5-6.3 APO DG OS HSM, Tokina 12-24mm, Sb-600, D50, Nikon 1.7 T/C, Gitzo CF Monopod

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    Do not worry about the squeak on start-up! I think you will find that its an automatic sensor clean.... you can turn this off in the menu. It uses high frequency something or rather to clean the sensor.
    Last edited by jasevk; 28-09-2010 at 12:14pm.
    Living the dream...

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    Quote Originally Posted by jasevk View Post
    Do not worry about the squeak on start-up! I think you will find that its an automatic sensor clean.... you can turn this off in the menu. It uses high frequency something or rather to clean the sensor.
    I'm surprised that would be audible but easy enough to try turning off.
    Maybe the little nikon demon who paints the picture in the camera is getting asthmatic. (poor discworld humor)

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    @ jasevk. You are so clever. Thanks.

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    my d300 never squeeked

    but then i again it never had focus issues either

    i think a service is in order
    Darren
    Gear : Nikon Goodness
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    Where is the sqeaking sound coming from? From the lens or from the camera body?
    Are you using AF-S or AF-D and older lenses which require the protruding focus "pin" to turn the focus on the lens? The sqeak could be coming from the ultrasonic ring, from the focus "pin", or from the focus motor on the camera body. Isolate where the sqeak is coming from.
    "The greatest camera in the world is the one you hold in your hands when shit happens." ©2007 Raoul Isidro

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    As per jasevk's post. The sound is the sensor cleaner at startup. Thanks for your all responses.

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    Member jasevk's Avatar
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    Quote Originally Posted by Herp Affinity View Post
    As per jasevk's post. The sound is the sensor cleaner at startup. Thanks for your all responses.
    No probs, I had similar concerns with mine when I first got it, nothing to worry about

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    Quote Originally Posted by jasevk View Post
    No probs, I had similar concerns with mine when I first got it, nothing to worry about
    I'm sorry....it has this feature....hum

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