Risky Business

Started May 30, 2012 | Discussions thread
Michael Fritzen
Veteran MemberPosts: 3,478
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Re: Errr.... just wondering...
In reply to Barrie Davis, May 31, 2012

Hi,

I have had myself similar experiences with occasional lacking sharpness using the Sony 70-400 at f/5,6 and 1/1000s being other images of the same session tack sharp with the same settings. I wasn't able to identify the reason but a sudden rise of warm air in a view of greater distances (tricking the AF) was one of the possible explanations.
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Cheers,
Michael Fritzen

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