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Old 16-11-2017, 10:49 PM
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Rigel003 (Graeme)
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Join Date: May 2006
Location: Adelaide, South Australia
Posts: 1,079
Not sure if this will help but I have Tamron 24-70 f2.8 that I use for everyday shooting and some wide field astrophotography with my Canon 6D. Here's an example stopped down to f3.2.

http://www.pbase.com/rigel003/image/164843693/original
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