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Old Jun 4, 2014, 3:06 PM   #19
SIMON40
Senior Member
 
Join Date: Sep 2011
Location: Bangor,North Wales
Posts: 3,755
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Late to the party here...but...
TCav... are you sure the "150" doesn't have a diaphragm...?
See these 2 pics- one at f/3.4, the other at f/8....
Focus area fixed on badge on torch....
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