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Old 10th November 2011
ianbirkett
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focus issues with polarising filter

Hi

I've been taking some landscape shots with a Hoya circular polarising filter attached. Usually in really good clear light. When I've looked at them on my computer sometimes they aren't as pin sharp as ones I've taken without the filter. The filter is brand new, very clean etc.

Is it just me or has anyone else had a similar experience. I wondered whether the filter might make the AF system not quite so reliable.

Cheers

Ian
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