D800 focus with 1.4 prime lenses is very variable and inaccurate

Started Jan 20, 2013 | Discussions thread
Horshack
Veteran MemberPosts: 4,068
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Re: My D800 frontfocusses in incandescent light
In reply to primeshooter, Jan 21, 2013

primeshooter wrote:

bloomoose wrote:

And very significantly so. I also tested another D800, my cousinĀ“s, and it also behaves like that.

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I believe mine is doing that too. I think it front focuses more than it back focuses but it does change, making AF fine tune useless.

Both my 5DM3 and D800 focus differently in tungsten vs full-spectrum lighting, but both focus differently in consistent ways (ie, different AF tune value for a particular lighting temperature but once that value is dialed in the AF is consistent).

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