D3S focus testing

Started Feb 14, 2010 | Discussions thread
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xrdbear Veteran Member • Posts: 3,887
Re: Focus hyperbola

Marianne (bearing in mind I know nothing), I wonder if this problem, showing up as it does in the new version of the 70-200, is compounded by the rapidly changing magnification/focal length at close distances that was discussed some time ago.
Just speculating.
--
Brian
Fine Art Print sales of the Isle of Skye at:
http://www.eyeofskye.co.uk/

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