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  1. #11
    Junior Member

    Re: Calibrating Autofocus on Sigma 150-600 Contemporary

    Hi, I just happened across your post on using the Sigma USB dock to adjust AF points on the Sigma 150-600 with a Nikon D850/D750.

    I have been doing the same thing, noting the AF adjustment values from the Nikon AF Fine Tune, to avoid taking the lens on and off the camera umpteen times.

    However I was advised (in another post) to DOUBLE the Nikon values when putting them into the Sigma adjustment table.

    Are you getting good results with a straight copy of the values?


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  2. #12
    Staff
    Super Mod
    Marilynne's Avatar

    Re: Calibrating Autofocus on Sigma 150-600 Contemporary

    Quote Originally Posted by David Eagle View Post
    Hi, I just happened across your post on using the Sigma USB dock to adjust AF points on the Sigma 150-600 with a Nikon D850/D750.

    I have been doing the same thing, noting the AF adjustment values from the Nikon AF Fine Tune, to avoid taking the lens on and off the camera umpteen times.

    However I was advised (in another post) to DOUBLE the Nikon values when putting them into the Sigma adjustment table.

    Are you getting good results with a straight copy of the values?

    Welcome!

    You may not get a response. The OP has not not been around since 2018.
    @GracieAllen
    Thanks/Like BeegRhob Thanks/liked this post
     

  3. #13
    Senior Member

    Re: Calibrating Autofocus on Sigma 150-600 Contemporary

    Yes, if I recall correctly the values I got from the Nikon microAF were doubled. But, the whole thing with using the dock was laborious enough that I finally quite worrying about any focal length other than 600mm. I set those values and so far all the shorter focal lengths have been fine since they have more DOF than 600. I did the lens on both the D500 and d850 and did them all with the 1.4X on the lens on both bodies. Works pretty well and things are perceptibly sharper at 600. And shorter.

  4. #14
    Senior Member

    Re: Calibrating Autofocus on Sigma 150-600 Contemporary

    Never mind. My post came off as snide, which is the way I meant it. But never mind.

  5. #15
    Junior Member

    Re: Calibrating Autofocus on Sigma 150-600 Contemporary

    Quote Originally Posted by Ad B View Post
    Hi,

    I calibrate my D850 withthe Sigma 150-600 C, with a combination of the green dot method and making test pics.
    At 150, 250, 400 and 600 mm. At distances of 2.8, 6, 15 meter and infinity.
    How many meters was your infinity test? What type of focus target did you use at this distance?

  6. #16
    Staff
    Super Mod
    Marilynne's Avatar

    Re: Calibrating Autofocus on Sigma 150-600 Contemporary

    Quote Originally Posted by cmalra View Post
    How many meters was your infinity test? What type of focus target did you use at this distance?
    Welcome!

    You may not get a response. The OP has not not been around since 2019. @Ad B

  7. #17
    Senior Member
    Bikerbrent's Avatar

    Re: Calibrating Autofocus on Sigma 150-600 Contemporary

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

    Also, you might want to go to
    New Member Introductions

    Introduce yourself to the community! Say Hi
    Brent: Poway, CA
    D7200, D200, F100
    Tokina 12-24mm
    Nikon 18-200mm
    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





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