Aside from the 4K capability, one thing everyone is talking about on the new Sony A7S is the new 12MP sensor and the ridiculous low light sensitivity that it delivers.
I got some hands-on time with the Sony A7s today and took several shots at various ISO levels. Below, I have assembled 100% crops of the images from the center of the frame from ISO 100-102400.
I shot these at f/8 but I ran out of shutter speed after 102400, which is why I’m not including the overexposed shots up to ISO 409600.
Here is the scene I snapped handheld at the Sony booth.
Now is a chart containing 100% crops of ARW files converted to JPEGs with no adjustments.
I missed focus on a couple of the shots and this is a terrible lighting scenario, but the A7S shows a lot of promise for low light and high ISO work. This is also probably a preproduction camera, so the results should not be taken as what the final production model is capable of delivering.
Here’s a larger 100% cropped area at ISO 80,000:
And here’s what the image looks like when downsized for the web (click for a 2MP-ish file):
The A7S certainly isn’t delivering “clean” shots at the extreme ISO settings; however, it will likely be the best performance we’ve seen on a camera to date when we finally get around to looking at a production model pitted against current DSLRs.