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  1. #1
    Junior Member

    AF Sensor Not Working Properly?

    The last three times I've shot, I cannot get the camera to use the center AF sensors. Every time I point the camera, it uses either the left or right sensor. I reset the settings once and that fixed the problem for a short while. The next I shot, the same thing was happening. I mostly shoot sports, so this is annoying because in many of my shots, the action is out of focus because the camera focused on something to the left or right of center.

    Any thoughts?


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  2. #2
    Senior Member
    mikew's Avatar

    Re: AF Sensor Not Working Properly?

    Welcome to the forum, my first thought is you are moving the focus point by accident,have you tried locking it in place using the lock lever (if it has one), hope i have understood your question
    Mike

    Nikon D500,Sigma 100-400,Sigma 105 macro

    Nikon 1 V2,FT-1,10-30mm 30-110mm Viltrox extension tubes

    Olympus EM10 MK11,14-42,40-150








  3. #3
    Senior Member
    mikew's Avatar

    Re: AF Sensor Not Working Properly?

    Ignore my suggestion it looks like you dont have a lock,pressing the OK button i think puts it back to the center though.
    Thanks/Like FletchMacFletch Thanks/liked this post
     
    Mike

    Nikon D500,Sigma 100-400,Sigma 105 macro

    Nikon 1 V2,FT-1,10-30mm 30-110mm Viltrox extension tubes

    Olympus EM10 MK11,14-42,40-150








  4. #4
    Senior Member
    Bikerbrent's Avatar

    Re: AF Sensor Not Working Properly?

    Welcome aboard. Enjoy the ride.
    We look forward to seeing more posts and samples of your work.

    D3400 does NOT have a lock lever, however you should be able to move the focus point using the multi selector on the back of the camera. You might want to refer to your manual. You can download one at Nikon | Download center | D3400
    Last edited by Bikerbrent; 09-01-2017 at 08:31 PM.
    Best Answers aporodagon voted best answer for this post
     
    Brent: Poway, CA
    D7200, D200, D70, F100
    Tokina 12-24mm
    Nikon 18-200mm
    Nikon 18-70mm
    Tokina 28-70mm f2.6-2.8
    Nikon 80-200mm f2.8
    Sigma 150-600mm
    Nikon 50 AF f1.8
    Tokina 100mm f2.8 Macro
    Nikon SB800

  5. #5
    Senior Member
    Horoscope Fish's Avatar

    Re: AF Sensor Not Working Properly?

    Quote Originally Posted by FletchMacFletch View Post
    The last three times I've shot, I cannot get the camera to use the center AF sensors. Every time I point the camera, it uses either the left or right sensor. I reset the settings once and that fixed the problem for a short while. The next I shot, the same thing was happening. I mostly shoot sports, so this is annoying because in many of my shots, the action is out of focus because the camera focused on something to the left or right of center.

    Any thoughts?
    What AF Area-Mode do you have set?
    Thanks/Like hark, FletchMacFletch Thanks/liked this post
     
    ~ Paul
    ....
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    Primary Weaponolgy :: D750 (OLPF Removed), MB-D10; Sigma 50mm f/1.4 Art, Sigma 35mm f/1.4 Art, Tamron 70-200mm f/2.8 Di VC USD G2, Tamron 24-70mm f/2.8 Di VC USD,
    Nikon 85mm f/1.8G; Yongnuo 568EX, Nikon SB-700; Manfrotto X055PROB, 3-Legged Thing Airhed II... All Stuffed into a Manfrotto Pro Backpack 50
    ....
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  6. #6
    Senior Member
    hark's Avatar

    Re: AF Sensor Not Working Properly?

    Quote Originally Posted by Horoscope Fish View Post
    What AF Area-Mode do you have set?
    My thought as well since he said sensors (plural) in his post. I'm guessing the camera isn't using single point.
    Thanks/Like FletchMacFletch Thanks/liked this post
     
    Cindy
    Flickr
    and
    My 2017 Thread
    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci

    Nikon 14mm f/2.8; Nikon 16mm f/2.8 fisheye; Nikon 85mm f/1.8G; Nikon 105 f/2.8G micro VR; Nikon 180mm f/2.8; Nikon 300mm f/4 AF-S
    Nikon 18-35mm f/3.5-4.5G; Sigma 24-70mm f/2.8; Nikon 70-200mm f/2.8 VRII; Nikon 70-300mm f/4.5-5.6G VR


  7. #7
    Junior Member

    Re: AF Sensor Not Working Properly?

    Focus Mode - AF-C, Area Mode - 3D. But this evening, I changed Area Mode to Single-point AF...same thing, the far right sensor is where it's focusing. I frame a bottle and it's focusing on the light switch to the right of the bottle.

    All - thanks for the posts & the help!

  8. #8
    Senior Member

    Re: AF Sensor Not Working Properly?

    So are you saying that in single point mode you cannot move the focus point to the center with the multi selector button? You should be able to jog it around to all the locations with the multi selector.
    I must have a really good camera.

  9. #9
    Senior Member
    hark's Avatar

    Re: AF Sensor Not Working Properly?

    Quote Originally Posted by nickt View Post
    So are you saying that in single point mode you cannot move the focus point to the center with the multi selector button? You should be able to jog it around to all the locations with the multi selector.
    You can move it around with the multi-selector/OK buttons, or you can lock it on one point.
    Cindy
    Flickr
    and
    My 2017 Thread
    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci

    Nikon 14mm f/2.8; Nikon 16mm f/2.8 fisheye; Nikon 85mm f/1.8G; Nikon 105 f/2.8G micro VR; Nikon 180mm f/2.8; Nikon 300mm f/4 AF-S
    Nikon 18-35mm f/3.5-4.5G; Sigma 24-70mm f/2.8; Nikon 70-200mm f/2.8 VRII; Nikon 70-300mm f/4.5-5.6G VR


  10. #10
    Junior Member

    Re: AF Sensor Not Working Properly?

    Oh man, nickt, that solved the problem. I'm embarrassed. Thanks for the assist. Total noob mistake.
    Thanks/Like nickt Thanks/liked this post
     





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