Become a part of the community. Register and take part in all the features the site has to offer.

Results 1 to 3 of 3
  1. #1
    New Member
    Join Date
    Dec 2016
    Location
    George
    Age
    63
    Posts
    1
    Post Thanks / Like

    Default Sigma 150-600 doc

    I have been using a Sigma 150-600 for mainly bird photography for about a year now. When shooting mainly terrestrial birds I noticed that it is front focusing. After getting the doc it made a huge improvement but also presented me with another problem. How do I fine tune infinity settings? The focus point at infinity is so far how do I determine the accuracy of the focus when it is set for the 4 focal lengths the doc calls for; 150, 250, 400 and 600mm. The other focal points are easy once the focus chart is downloaded and set up.

  2. #2
    Frequent Member
    Join Date
    Dec 2015
    Location
    Germiston
    Posts
    325
    Post Thanks / Like

    Default Re: Sigma 150-600 doc

    Did you find a resolve to this David?

  3. #3
    Administrator SimonDP's Avatar
    Join Date
    Oct 2004
    Location
    Centurion RSA
    Age
    58
    Posts
    21,986
    Post Thanks / Like

    Default Re: Sigma 150-600 doc

    I have calibrated various Sigma's with the dock, including 150-600 C and S, and once you calibrate at 600 at 10m distance, I have not found any variation in accuracy when focusing to 50 meters. Good enough for me.
    Simon Du Plessis

    www.actionimage.co.za simondp@actionimage.co.za

    (I'll keep on shooting, and one of these days I'll get it right!)
    Contact me for training in Beginners, Macro, Wildlife or Sport & Action photography
    Please e-mail or PM me should you wish to have my comments on a specific image, or to comment/ask questions on my crits)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •