You can start seeing the edge artifacts from Sony's image processing in the shadow areas at ISO 800 (look at "pushed").
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High ISO sensitivity JPEGs
There's some detail loss in the out-of-focus areas at ISO 1600, and by ISO 3200 soft shadow areas show a lot of mushiness compared to the in-focus areas.
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A7 vs. A7R, ISO 100 JPEG
You can really see the difference between the sensors in the A7 and A7R.
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ISO 100 JPEG
Even at ISO 100, it's not exceptionally sharp, although you can do a little better with a higher-end lens. (This was shot with the 28-70mm kit lens.)
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ISO 400 JPEG
You get reasonable detail at ISO 400.
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ISO 800 JPEG
Sony's slightly aggressive processing results in edge artifacts as ISO sensitivity increases. That said, overall it's still pretty good.
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ISO 800 oddness
This odd interference pattern in the blue channel resulted in yellow bands across the labels. It appears only in this shot, however.
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ISO 1600 JPEG
While it's pretty soft at ISO 1600 -- and there may be a tiny bit of shake in this photo -- the A7 holds color saturation well.
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ISO 3200 JPEG
The A7's algorithms do hold onto sharpness in the focused areas.
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ISO 6400, raw vs. JPEG
You can recover quite a bit of detail shooting raw.
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ISO 12800 JPEG
While raw recovers a little detail at ISO 12800, the JPEGs are quite usable scaled down.
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Color
Sony's color reproduction at the default settings looks relatively neutral.
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Creative Styles
On its defaults, the A7 pushes the saturation a little bit but it doesn't overboost the contrast.
