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  1. #1
    Senior Member
    mikeee's Avatar

    Auto AF tuning

    VERY cool feature!
    I just spend a couple hours trying to tune my Sigma f1.8 A 50-100mm.
    The dock software lets you tune for 50mm/60mm/85mm/100mm at 4 different distances.
    It's important to have the setup right with a good focus target and a good tripod, and I am looking forward to
    trying this lens out now in the field!


    › See More: Auto AF tuning
    Thanks/Like cwgrizz, Rick M Thanks/liked this post
     
    D7500 / D7100 / N6006 / Nikon AF-S 35mm / Nikon AF 50mm / Sigma 17-50mm / Nikon AF-P FX 70-300mm / Tokina 11-16mm / Sigma C 150-600mm / Sigma A 50-100mm



  2. #2
    Senior Member
    mikeee's Avatar

    Re: Auto AF tuning

    Well, I can say that the correction numbers that the camera gives do not correspond to the corrections in the sigma dock, but if you were to half the nikon
    numbers, you'd probably be pretty close. Just a couple retests through the range and auto AF fine tune is putting up corrections of 0 or there abouts
    through all 16 set points! whoop!
    D7500 / D7100 / N6006 / Nikon AF-S 35mm / Nikon AF 50mm / Sigma 17-50mm / Nikon AF-P FX 70-300mm / Tokina 11-16mm / Sigma C 150-600mm / Sigma A 50-100mm

  3. #3
    Senior Member
    mikeee's Avatar

    Re: Auto AF tuning

    Gotta be really careful to make sure the camera is shooting straight on to the target too...
    D7500 / D7100 / N6006 / Nikon AF-S 35mm / Nikon AF 50mm / Sigma 17-50mm / Nikon AF-P FX 70-300mm / Tokina 11-16mm / Sigma C 150-600mm / Sigma A 50-100mm

  4. #4
    Senior Member
    Rick M's Avatar

    Re: Auto AF tuning

    I had the 35 1.4 and dock years ago, I found the tuning experience to be a pain in the...., I think I over-obsessed and spent too much time on it. It seemed corrections weren't true at all distances.
    Rick

    http://www.rmillsphotography.com/

    Nikon Z7, Nikon Z s 50mm 1.8
    Nikonite
    Tee-shirt, lens cloth and business cards!


  5. #5
    Senior Member
    mikeee's Avatar

    Re: Auto AF tuning

    I am hoping to overcome some occasional frustrations with this lens.
    At times, the images are amazingly sharp, and at others just "ok".
    I measured a pretty good correction at the long end of the focal length (85/100mm) at short distance.
    It might explain why some of my family christmas photos are just so-so!
    Guess time will tell!
    D7500 / D7100 / N6006 / Nikon AF-S 35mm / Nikon AF 50mm / Sigma 17-50mm / Nikon AF-P FX 70-300mm / Tokina 11-16mm / Sigma C 150-600mm / Sigma A 50-100mm

  6. #6
    Senior Member

    Re: Auto AF tuning

    Imagine how much it helps with the 150-600mm Sport.
    Jake
    (formerly backdoorhippie)

  7. #7
    Senior Member
    mikeee's Avatar

    Re: Auto AF tuning

    I have a 150-600mm Contemporary. That will be more difficult to tune until summer!
    D7500 / D7100 / N6006 / Nikon AF-S 35mm / Nikon AF 50mm / Sigma 17-50mm / Nikon AF-P FX 70-300mm / Tokina 11-16mm / Sigma C 150-600mm / Sigma A 50-100mm





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