a7S high ISO claim - - -over hyped or not ?

Started Jul 3, 2014 | Discussions thread
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andrewD2 Veteran Member • Posts: 8,611
Re: a7S high ISO claim - - -over hyped or not ?

ProfHankD wrote:

andrewD2 wrote:

The A7R is reading better in THEIR DR tests because of the resolution.

Read the full set of tests at DxO. Rather than viewing "scores," click on "measurements" and then "dynamic range." Two plots are available there. The "print" one shows the dynamic range at each ISO when all images are first scaled to 8MP (the default graph). The "screen" one shows the dynamic range at the native pixel resolution -- not giving the A7R (or A7) an advantage, but essentially penalizing them for their higher resolution.

At no time can the A7s resolve 36MP. That means if the detail is resolved in a moderate to high DR scene by the A7r DESPITE a little more noise per pixel at ISO100 it will still be an apparent winner. On an extreme DR scene who knows. 10 stop push back? Anyone tried that?

Andrew

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