Question about Nikon D40 Digital Camera with G-II 18-55mm Lens

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Use of teleconvertres

Hi all i own NIkon D40 with std lences and also got Sigma (Sigma 70-300mm f/4-5.6 APO Macro DG )
I need some information regarding use of teleconverter, i want to double the focal length of lence of my 2 lences. i need some specific information such as is this converter will afect my micro capability and whether its worth to use it...
i have selected following teleconverter Kenko Teleplus MC4 2x Teleconverter
please help me

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Teleconverters are not recommended with variable aperture and slow zoom lenses. Since there is an additional element, the effective max. aperture will get reduced to about f/8-11. So it is not worth the money.

Posted on Feb 14, 2009

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