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UV/IR Thermal or Xray Photography Humans happen to use visible light naturally but now we can go beyond the usual wavelengths we appreciate, to find out more about our world and ourselves.

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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: 1,209
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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