12.2 MP 35mm full frame sensor 
The a7s combines phenomenal sensitivity - ranging from ISO 50 to 409600 for still images and ISO 200 to 409600 for movies with supremely low noise, courtesy of Sony’s new 12.2-megapixel 35mm full-frame Exmor CMOS image sensor and optimised high-speed BIONZ X image processing engine. Professional movie functions satisfy the highest demands of serious photographers and videographers, and it’s all packed in the world’s smallest 35mm full-frame interchangeable-lens camera body.

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Ultra-high sensitivity up to ISO 409600
Expand your still and movie capabilities with the ultra-high sensitivity range from ISO 50 to 409600 for still images and ISO 200 to 409600 for movies.

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BIONZ X processor
Sony proudly introduces the new BIONZ X image processing engine, which faithfully reproduces textures and details in real time, as seen by the naked eye, via extra high-speed processing capabilities. Together with front-end LSI (large scale integration) that accelerates processing in the earliest stages, it enables more natural details, more realistic images, richer tonal gradations and lower noise whether you shoot still images or movies.

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Clean HDMI output for 4K movies
Non-compressed image output is now possible at 4K (QFHD; 3840 x 2160 pixels) resolution with selectable 30p and 24p frame rates. You can choose 4K or Full HD output from a menu. The 4K output capability allows recording of high-quality 4K images by a 4K-compatible recorder, as well as 4K output directly to a compatible monitor or TV.

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Multiple recording formats
The a7s records in a wide variety of formats convenient for photographers working at all professional levels. It is compatible with 4K 24p, 30p/Full HD 60p, 60i, 30p, 24p video output and Full-Frame & APS-C (Super 35mm equivalent) size.

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Full-frame filmmaking
Portable moviemaking reaches a new level of flexibility and attainability with the a7s’s unique combination of 35mm full-frame sensor, audio production features, and flexible lens interchangeability. Now, the dramatic effect of beautiful bokeh, plus the artistic choice of creating a rich cinematic ambience is yours, thanks to the full frame, P/A/S/M mode, and advanced audio capabilities. The accelerated BIONZ X image-processing engine enables area-specific noise reduction and detail reproduction technology to be applied to movies, resulting in ultra-fine detail and exceptionally low noise. Features like Picture Effect, full HDMI output for an external monitor, and full 1080p AVCHD Progressive format plus XAVC S, and the choice of 60p/24p recording further expand the options.

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XAVC S format
The high-bit-rate XAVC S format is provided for serious videographers. Available for the first time in an a camera, it enables Full HD image recording at 50Mbps 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. Note: Sony recommends using an SDXC memory card higher than Class 10 when shooting movies in the XAVC S format.