I received a request to compare the read noise versus ISO setting of the Sony a7S in silent shutter mode to that of single shot electronic first curtain shutter (EFCS) mode. I already had the data (look here ), so all I had to do was put both curves on the same graph: Mostly as… [Read More]
Archives for July 2014
Sony a7S read noise in speed priority continuous mode
I’ve been asked if the read noise in speed-priority continuous drive mode is the same as it is in plain old continuous mode. It appears that it is: The histogram indicates the same 12-bit precision:
Sony a7S handling
I’m close to being done with the a7S review. In this post, I’ll depart from my usual objective reporting and give you an impression of what operating the camera was like. When I first got the camera, I thought of it as sort of like a Nikon D3 or D3s, both of which I loved… [Read More]
The Sony a7S AA filter
The a7R has no anti-aliasing (AA) filter. The a7 has one that’s pretty weak, and mostly operates in one direction. With its big fat pixels, the a7S would seem to be prone to aliasing. What did Sony do about that when they designed the camera? I set out to learn. I put the sharpest lens… [Read More]
How fast is the Sony a7S silent shutter?
The a7S has a silent shutter mode. When running silent, the mechanical shutter is on vacation, lying back and catching Z’s while the sensor does all the work. The mechanical shutter is a rabbit, completing an exposure in 1/250 second (for shutter speeds faster than that, a slit moves across the sensor, but it takes… [Read More]
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