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Focal Lenght/Focal Ratio
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19-08-2024, 06:07 PM
bojan
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Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 7,102
Wikipedia and Google are your friends....
https://www.google.com/search?client...&bih=832&dpr=1
https://en.wikipedia.org/wiki/Focal_length
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