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Old 05-09-2016, 02:03 PM
raymo
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raymo is offline
 
Join Date: Sep 2011
Location: margaret river, western australia
Posts: 6,070
It,s impossible for an image taken through an ED80 at f/6.375 using the same camera settings to be brighter than an image taken through a 200mm f/5.5
Newt. The Newt has 6.25 x the light gathering power of the ED80, and is
also somewhat faster. I suspect that fogging is probably on the mark.
raymo
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