Thread: Added f/6.3 reducer and focus is WAY off
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  #21  
Old 07-12-2016, 11:23 AM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
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You can check the reducer by focusing the sun on a piece of paper and measuring the focal length - it should be close to 240mm.
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