Thread: Crux to Carina
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  #3  
Old 13-07-2017, 11:25 PM
Martin Pugh
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Martin Pugh is offline 		 
Join Date: Nov 2006
Location: Canberra, Australia
Posts: 1,346
Thank you Colin.

As a professional lens, this particular model is absolutely terrible wide open. For perfect stars edge to edge, it needs to operate at f8! I used f6.3 in this image.

cheers
Martin
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