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Alpha_Geist
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Re: OM-D & PEN Images


I have a few question regarding the Oly m4/3 sensor and the Metabones Speed Booster adapter.

Has anyone used themon their Oly? If so, how is the f/no. affected with the speed booster on the m4/3 sensor? I know the speed booster improves light gathering/speed by 1 stop, and the focal length is widened by 1.42x (.71 for the adapter and 2x for the m4/3 FF equivalent focal length = 1.42x), but the f/no. is still faster.

- Example -

50mm f/2 lens Speed Boosted on a m4/3 camera becomes:
FOCAL LENGTH maths
50mm x .71 = 35.5mm x2 (for FF equivalent focal lengths on m4/3 sensor) = 71mm

F/no. maths
f/2 -> 1.4 from speed booster, but then becomes a f/x for FF equivalent?

I\'m getting a bit tripped up with FF equivalent conversions with m4/3 sensors and throwing in a Speed Booster only added to it.

From a previous post on the PanLeica 42.5mm f/1.2 lens and FF equivalents which started it all.
https://www.fredmiranda.com/forum/topic/1231106/8#12185247


I\'ve been looking at the Oly and Fuji offerings and have been swayed by the IBIS of the Oly.



Mar 19, 2014 at 10:57 PM





  Previous versions of Alpha_Geist's message #12217772 « OM-D & PEN Images »