FOM writes:
<<Also not as good as the PLeica 100-400 @ 400 - 800 mm eq. on µ4/3, by quite a
<<bit.
<<Also not significantly better than the 1" sensor Sony Rx10IV, which weighs
about the same as an E-M5x and a bit less than an E-M1 II, with 500/8 mounted.
And that's an amazingly versatile <<camera.
<<These opinions are based on real tests @ about 1:40. Sony A7 on sturdy tripod
<<for the FF lenses, remote release.
Caveats of the analysis:
Speedbooster ultra used--probably the .71 not the 0.64 version. Both INCREASE
MTF and eliminate the effect of sensor stack. Stack issue minimal at these
FL's though but MTF improvement
could be interesting and is Speedbooster use still results in a crop also
affecting the results vs FF. I still suspect the PL will be much better but
explains how useful the lens can still be on MFT.
https://www.metabones.com/products/?c=micro-43-system-2
https://www.metabones.com/assets/a/stories/Speed%20Booster%20White%20Paper.pdf
The 0.64X version is apparently risky to use on E-M1 mkx cams--drat. It has
been done however.
Don't forget the Speedbooster, Mike
--
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