High ISO Comparison: Nikon D810 vs 5D Mark III vs D610 vs Sony A7R

Dpreview posted the high ISO comparison test results of Nikon D810, Canon EOS 5D Mark III, Nikon D610 and Sony A7R. You can see the high ISO comparison below.

All images are RAW files:

ISO 6400
ISO 12800
ISO 25600
ISO 51200

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