A full-frame 4K camera offering superior sensitivity, stunning low-light performance and compact dimensions, the a7S offers professional quality movie making whilst being small enough to take anywhere. The possibilities are endless.
Standard ISO range: Still 100 – 102400, Movie 200-102400. Expandable ISO range: Still 50-409600, Movie 200-409600
From starry night-time skies to atmospheric, candle-lit interiors: there’s now a camera that opens up extraordinary creative possibilities for capturing flawless, emotionally engaging movie footage and professional-quality still images.
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 camera’s powerful BIONZ X processing engine, this reduces image noise while increasing effective sensitivity range of the α7S to ISO 50 – ISO 409600 in expanded mode (ISO 200 – 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 camera’s huge sensitivity, it’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 sensor’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, there’s a notable absence of undesirable aliasing (moiré) effects and ‘jaggies’ 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 that’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 – ideal for seeing every detail of sports action or the balletic grace of a dancer.
There’s a wealth of other specialist functions to please professional videographers such as Picture Profile™ 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 camera’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.
Sensor Format Full Frame
Sensor type CMOS
Sensor size 35.6 x 23.8 mm
Max Resolution 4240 x 2384
Aspect ratio 3:2
Autofocus points 25
Autofocus system Contrast-detection AF
Lens mount Sony E
Frames per second 5
ISO min 100
ISO max 102400
Card format Memory Stick PRO Duo, Memory Stick PRO-HG Duo, Memory Stick XC-HG Duo, SD, SDHC
File formats RAW, JPEG, XAVC S, AVCHD
Battery model NP-FW50
Shutter speed fast 1/8000 sec
Shutter speed slow 30 sec
HD Movie mode 4K
Screen size (inches) 3.0
Screen resolution 921600
Live view Yes
Viewfinder XGA OLED
Flash guide number 0
Size 126.9 x 94.4 x 48.2 mm
Weight (g) 446
Connectivity HDMI micro connector (Type-D), BRAVIA Sync (link menu), PhotoTV HD, 4K still image playback, Mass-storage, MTP, PC remote