Thread: How evil is an f/6.3 reducer?
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Old 12-06-2010, 06:16 AM
riklaunim
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riklaunim is offline 		 
Join Date: Apr 2010
Location: Poland
Posts: 74
f 3.3 reducer provides only 9mm corrected circle. f 6.3 is designed to iluminate APS-C sensor (DSLR). Optimal distance to sensor is 105 mm. I've seen few images of setup where it is used with a refractor.
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