Sony a7S with ISO 409.600 at Photo and Video
Press Release: 2014-04-06
Awe-inspiring sensitivity realizes a new world of imaging expression
- Wide ISO sensitivity setting from 50 to 409600 and unprecedented dynamic range
- Worldâ€™s first full-frame sensor capable of full pixel read-out without pixel binning process for movie and 4K (QFHD: 3840 x 2160) HDMI video output
- Professional video functions including XAVC S Full HD recording at 50Mbps, time code and optional XLR audio inputs
- High ISO sensitivity range allows faster shutter speeds during low light shooting
- α Mount System compatible with a wide range of high quality lenses, including power zoom lens ideal for movie shooting
- Improved Fast Intelligent AF performance in light as low as EV-4
- Ultra compact, light-weight body for comfortable pro-style operation
From starry night-time skies to atmospheric, candle-lit interiors: thereâ€™s now a camera that opens up extraordinary creative possibilities for capturing flawless, emotionally engaging movie footage and professional-quality still images.
Joining the acclaimed α7 and α7R â€“ the worldâ€™s smallest full-frame interchangeable lens cameras â€“ the α7S from Sony puts extraordinary sensitivity, low noise and spectacular 4K (QFHD: 3840Ã—2160) image quality into the hands of serious photographers and videographers.
Equally suitable for still photography and cost-conscious movie production, the α7S delivers dramatic artistic possibilities in the smallest body of any full-frame interchangeable-lens digital camera in the world.
Key to the extraordinary sensitivity of the α7S is a specially developed new full-frame 35mm Exmor CMOS image sensor.
With a 12.2 effective megapixel count the size of each individual photoreceptive site is significantly boosted to increase their light-gathering power. Coupled with the cameraâ€™s powerful BIONZ X processing engine, this reduces image noise while increasing effective sensitivity range of the α7S to ISO 50 â€“ ISO 409600 in expanded mode (ISO 200 â€“ 409600 for movies).
This unrivalled sensitivity and ultra-low noise floor allows the α7S to capture beautiful images in low light conditions where a lengthy exposure would normally be needed. Thanks to the cameraâ€™s huge sensitivity, itâ€™s possible to shoot crisp, low-noise stills and video using faster shutter speeds. Its immense dynamic range is also ideal for high-contrast scenes, effortlessly handling extreme highlights and rich, deep blacks in the same frame.
Because of the image sensorâ€™s extraordinary sensitivity, the amount of light it can collect is dramatically increased compared with conventional cameras. The newly developed image sensor provides photographers/videographers with high dynamic range in all conditions from extremely low light to bright sunlight.
Using data read-out from every single pixel of the 35mm full-frame sensor (24p and 25p), 4K images created by the α7S are impressively detailed, with outstandingly rich colours and life-like textures in every frame. Refined by the BIONZ X processor, the high-speed data stream allows the α7S to output video at 4K resolution from the HDMI connector with 4:2:2 colour sampling, for recording onto an external storage device or viewing on a compatible monitor.
Thanks to the full pixel read-out from the whole of the 35mm full-frame sensor, thereâ€™s a notable absence of undesirable aliasing (moirÃ©) effects and â€˜jaggiesâ€™ that betray lower-resolution video. Stunningly clear images can be recorded on a memory card in Full HD quality with XAVC S recording format at the 50Mbps data rate thatâ€™s highly regarded by professional videographers.
In APS-C crop mode, the α7S supports high frame rate shooting at 120fps or 100fps with HD resolution (1280 x 720 pixels). The 120fps footage can be played back at 24p for a 5x slow-motion effect â€“ ideal for seeing every detail of sports action or the balletic grace of a dancer.
Thereâ€™s a wealth of other specialist functions to please professional videographers such as Picture Profileâ„¢ for wide ranging visual expression and S-Log2 gamma. Time code/user bit functions allow pro-style editing workflow, while an optional XLR Adaptor Microphone Kit supports high-quality audio acquisition.
As already proven on the α7R, high-speed, high-precision Fast Intelligent AF has been further improved to fully exploit the new cameraâ€™s extraordinary low-light performance as low as EV-4. Other features familiar to α7 users include a high-contrast XGA OLED Tru-Finder, Wi-Fi/NFC connectivity and compatibility with the growing range of downloadable PlayMemories Camera Apps.
Thereâ€™s a growing range of α lenses to take full advantage of the cameraâ€™s near-limitless creative potential. Currently under development, a brand-new full frame E-mount power zoom 28-135mm, F4 lens appeals to quality-conscious movie-makers. In addition, Sony is collaboratively working with third parties to support pro-quality 4K video workflow. A new XLR adaptor kit with a direct attachment mechanism is also under development.
The new α7S full-frame interchangeable lens digital camera from Sony will be available in Europe in summer 2014.
 Standard ISO range: Still 100 â€“ 102400, Movie 200-102400. Expandable ISO range: Still 50-409600, Movie 200-409600
 Among interchangeable-lens cameras equipped with a 35mm full-frame (equivalent) image sensor â€“ as of press release date.
 (QFHD 3840 x 2160 pixels)
 Not supplied with α7S
 SDXC memory card higher than Class 10 is necessary when shooting movies in the XAVC S format.