Thread: [WITHDRAWN] Coulter 13.1 inch f/4.3 Mirror with Secondary
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Old 07-05-2019, 11:49 AM
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traveller (Bo)
Not enough time and money

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Join Date: Aug 2011
Location: Melbourne
Posts: 2,133
Hi Rob,
Just to clarify, if it's a 13.1 f4.5, shouldn't the FL be 58.95"?
FL of 56.3" at 13.1" give a f ratio of f4.3?

Thanks
Bo