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  1. #1
    Junior Member

    AF-S single point

    I have a D7200. If I select AF-S single point, and in the menu I have AF-S Priority selection set to "focus", I cannot get the camera to take the shot in any mode except "Auto". I found that if I change to AF-S "Auto" from "Single Point" it works, or if I change to "Release" priority it will work. Why is that? What are the right settings to use for AF-S Single point?


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  2. #2
    Staff
    Challenge Team
    Moderator
    RocketCowboy's Avatar

    Re: AF-S single point

    Howdy and welcome to Nikonites!!!

    "Auto" mode is basically ignoring most of your settings and letting the camera decide what to do. With single point, you're telling the camera there is exactly one point that you want to be in focus. When you set priority to focus, the camera will not let you trip the shutter until that single focus point is in focus. If the camera can not achieve what it thinks is focus, you don't get a shot. With the priority set to release, you trip the shutter whether the focus point is in focus or not.

    There are times when the AF on the camera can not determine whether it's achieved focus or not, or may you want to focus on an object and then move to recompose ... so that the single focus point is no longer in focus. Both settings can be "right" it ultimately depends on what you're trying to do with your camera.

  3. #3
    Junior Member

    Re: AF-S single point

    I understand what you say, however, I can set the focus point on any object indoors or out, and in any mode, A,S,P,M and it will NOT trip the shutter (except in Auto Mode), if I have selected both AF-S single, and Priority setting "of Focus". Very strange, and I don't understand why that is. Perhaps there is another setting that is in conflict with it.

  4. #4
    Junior Member

    Re: AF-S single point

    Try it on your camera and let me know if same happens to you. If not, there is a conflicting setting somewhere, or, I have a camera problem......which I do not believe.

  5. #5
    Senior Member

    Re: AF-S single point

    Is the camera actually focusing? Check with your single point on a near object and then a far object in viewfinder mode. Put your single focus point in the center. Does the lens refocus? You should get green focus confirmation dot in the lower left viewfinder. As Charlie said, it must see focus under that point to trip the shutter. Although af-s should let you hold the shutter button half way and recompose.
    I must have a really good camera.

  6. #6
    Senior Member

    Re: AF-S single point

    Just to add, if no green dot in af-s with focus priority, the shutter won't trip. You must get the green dot. If you hold the shutter half pressed and recomposed, the dot will stay on allowing you to focus-recompose. Don't worry about that yet, just confirm you are focusing and getting the green dot.
    I must have a really good camera.

  7. #7
    Junior Member

    Re: AF-S single point

    I can hear the camera focus, but no trip of shutter. I get no green dot in any shooting mode, using any AF mode, nor in any meter mode. When the shutter will not trip, I get an arrow (<) pointing to the left. That arrow is to the left of the shutter speed.

  8. #8
    Senior Member

    Re: AF-S single point

    I just picked up my camera, looks like a white dot not a green dot. But anyway, no dot? How about in af-c? You should get left and right arrows and see the dot frequently flash as you pan around and the camera finds focus on various things. Depending on priority, it will trip the shutter anytime or wait for focus. In af-s focus priority, you must get the white dot. Visually, does it look like you are in focus from the viewfinder? if for some reason the camera can not find focus, you will hear it hunt, but it won't lock and you won't get a dot and it probably won't look focused under the single point.
    I must have a really good camera.

  9. #9
    Junior Member

    Re: AF-S single point

    The lens I am having the problem with is a Nikon AF-S Nikkor 18-200 VR. I have the 3 switches on the lens set to M/A, VR, Normal. But it will not display the white dot. Only occasionally a < arrow. My Tokina ATX PRO AF 11-16 F2.8 will show the white dot, and in AF-C the arrows will move left and right when I pan and will go to a white dot. However, I do not hear the camera focus motor hunt. So is the issue with the camera, or one or more of my lenses?

  10. #10
    Junior Member

    Re: AF-S single point

    I have also found that on my Tokina lens, it also will not trip the shutter when on AF-S single. Looks like a camera auto focus issue.





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