The A7s combines phenomenal sensitivity up to ISO 409600 with supremely low noise, courtesy of Sony’s 12.2-megapixel 35 mm full-frame Exmor CMOS image sensor and optimized high-speed BIONZ X image processing engine. Professional movie functions satisfy the highest demands of serious photographers and videographers, plus everything is precision-packed in a small 35 mm full-frame interchangeable-lens digital camera body for unparalleled mobility.
The sensor reads out image data from every pixel, even during Full HD and 4K movie output, and enables recording and output of Full HD movies at 60p (50p), 60i (50i), 30p (25p) and 24p frame rates, as well as output of 4K movies at a 30p or 24p frame rate, with both resolutions available at both full-frame and APS-C (Super 35 mm equivalent) size.
The high-bit-rate XAVC S format is provided for serious videographers. Available for the first time in an α camera, it enables Full HD image recording at 50 Mbps for extremely high-quality expression and minimal noise. It also employs the Long GOP (Group of Pictures) data compression method to realize efficient movie recording.
**4K movie recording requires a 4K compatible recorder**