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Old January 14th, 2013, 09:26 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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Join Date: Jul 2010
Location: Weinheim, Germany
Posts: 1,261
Default Metabones "Speed Booster": results & influence on choice of camera bodies and lenses!

Metabones + Dr Brian Caldwell announced their new "Speed Booster",
actually a well known principle from astronomy, a focal reducer or telecompressor.

See here: Metabones - Metabones and Caldwell Photographic introduce Speed Booster

White Paper is here:

Test is here: An adaptor which claims to make your lens, faster, wider and better!! This is NOT an April Fool’s! | Philip Bloom


Done that before for my sort of photography, see on my BLOG: Photography of the Invisible World: Search results for reducer

without reducer/telecompressor:

with reducer/telecompressor:

overall system changed from f4 to f1.6 and the focal length from 84mm to 34mm!
Klaus my normal photographic work my ultraviolet (UV) work

Last edited by Asher Kelman; October 29th, 2013 at 09:23 AM.
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