How many extension tubes needed?
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:
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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