dpreview has posted a first impressions review of Sony a7RII (Amazon, B&H Photo Video, Adorama). Also add some high ISO images of Sony a7RII, here is a quick high ISO comparison with Nikon D810, Canon EOS 5Ds R and Sony a7S.
Sony a7RII Vs. Nikon D810 at ISO 51200
Sony a7RII Vs. Canon EOS 5Ds R at ISO 12800
Sony a7RII Vs. Sony a7S at ISO 102400
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which iso does the image look useable on the sony a7rii? it’s a bit of a short test, init?
I wonder why Sony gets all the praise for good high ISO sensors. The Canon looks in the 5Ds looks about the same to me. The noise is a bit more colorfull, but the pictures also appears a bit sharper. It looks like Sony suppresses the noise with less sharpening, while Canon doesn’t mind about more pronounced noise as Long as it helps sharpness.