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Old 14-03-2020, 06:02 PM
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PRejto (Peter)
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Join Date: Jan 2011
Location: Rylstone, NSW, Australia
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Maybe this isn't too surprising given the CFZ is so much larger at higher f ratios.....meaning, dust that would be blurry and hard to see at f4 would be much crisper at f15. My guess.

Peter
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