Thread: Sbig stf
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Old 15-11-2011, 11:01 AM
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DavidTrap (David)
Really just a beginner

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Join Date: Jun 2009
Location: Brisbane
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Originally Posted by Peter Ward View Post
With OAG and filter wheel 54.5mm (The optical back focus is actually 54.6mm) . Without OAG a mere 37.5mm.

Colour chipped versions with the OAG sit at 34.5mm
Excellent new Peter! Glad they've got that "right".

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