Very cold very bad focus ???? D700

Started Jan 23, 2013 | Discussions thread
Hugo First
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Re: Very cold very bad focus ???? D700
In reply to mironv, Jan 23, 2013

might be helpful to know exactly what conditions you are shooting in... cold is how cold? is the weather inclement, or dry? the cold must be causing the lens mechanism to shrink enough to affect the AF mechanism's calculations -- which are probably tuned within strict tolerances to achieve acceptable focus. i can't say i've ever had problems like you describe, even though i've been out shooting in very low temps. still, your cold temperatures could be far, far more frigid than what i've experienced.

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