PPRuNe Forums - View Single Post - Telephoto lens

22nd Mar 2010, 20:36

#18 (permalink)

MAN777

Join Date: Jul 2003

Location: Manchester

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Just a footnote regarding the use of teleconvertors, adding them can drastically reduce the available light, an F4 lens with a 1.4 convertor effectively looses 1 stop so becomes the same as an f5.6 lens.

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