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Explain something to me about focal ratios.
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01-02-2012, 10:17 PM
Mark_Heli
(Mark)
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Join Date: Nov 2010
Location: Sydney
Posts: 152
I have always found it easier to understand these concepts with a picture, so I have put together a quick diagram which shows my understanding.
Hopefully this is accurate and useful.
Cheers,
Mark
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