How many extension tubes needed?

Started Mar 30, 2014 | Discussions thread
Michael Benveniste
Senior MemberPosts: 1,984Gear list
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Re: How many extension tubes needed?
In reply to bruxi, Mar 31, 2014

The number of extension tubes you need depends on the lens you want to use and the magnification you want to achieve. I use this site to get a pretty good idea:

http://home.comcast.net/~nikond70/Tools/Simple_Close-up_Calculator/Simple_Close-up_Calculator.htm

With your 50mm f/1.4, with 37mm of extension you can reach magnifications of just under 0.75x. With 74mm, you can reach magnifications of just under 1.5x.

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 Michael Benveniste's gear list:Michael Benveniste's gear list
Nikon Coolpix 995 Nikon D200 Nikon 1 V1 Nikon D800 Nikon AF-S DX Nikkor 18-70mm f/3.5-4.5G ED-IF +31 more
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