Addendum: I see one can not link directly to some of the direct
measurements--hit measurement tab, then "dynamic range" or SNR The A7RII has
about a 2 stop advantage at higher ISO for DR/SNR-that is the DR/SNR of the
A7rII at ISO 6400 requires ISO 1600 for the E-M5II at least by DXOmark
measures.
Mike
The best FF sensors (Sonny) will outperform the best MFT sensors in
measurements. The physics of 4X area with more overall signal will eventually
trump the gains in engineering especially as one pushes up the ISO.
https://www.dxomark.com/Cameras/Compare/Side-by-side/Sony-A7R-II-versus-Olympus-OM-D-E-M5-Mark-II___1035_1006
Whether that matters for moderate sized prints or web images is another story.
If one likes astro-landscapes with high DR at high ISO then A7RII is way to
go. Sonny is still ahead of Canyon on this. All is not sweetness on light
for this cam as the sensor does run hot and the A7r may be better for long
exposures. One can also use HDR and multishot high-resolution modes on Oly
MFT to make up the difference for static subjects.Mike
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