Sony a7s

Sony a7s

Full-frame 12.2MP Exmor CMOS sensor and BIONZ X image processor provide exceptional video and still image quality with a wide dynamic range and minimal noise. The camera’s sensitivity is extended to ISO 409600, and it has a maximum sensitivity of ISO 409600.

Specifically, this full-frame sensor uses an innovative on-chip gapless lens architecture, which integrates miniature lenses between nearby pixels in order to boost light-gathering efficiency and promote higher picture quality throughout the whole sensor surface.

Furthermore, the sensor and processor combination provides a plethora of speeds throughout the camera system, including a maximum continuous shooting rate of 5 fps, support for 4K video recording, and a fast 25-point contrast-detection autofocus system that can detect objects down to -4 EV in low light.

Aside from its ability to capture still images, the a7S is also highly capable when it comes to video recording. Aside from being able to record full HD 1080p video in the high-quality XAVC S format at 50 Mbps at a variety of frame rates, it can also send uncompressed 4:2:2 UHD 4K video to an optional external recorder via HDMI.

Adding to the video recording capabilities is support for S-Log2 gamma, which helps to increase the effective dynamic range when recording. Other features include image profile settings, time code, and zebra marker display aids, all of which assist to enhance the overall video recording experience.

The sound may be recorded in the AAC/Linear PCM format using the internal stereo microphone, which has a built-in headphone connection for onboard monitoring, or with an external microphone using the AAC/Linear PCM format.

Both a 3.0 and a 4.0-megapixel sensor complete the a7S’s photographic capabilities “For picture viewing and evaluation, a 921.6k-dot tilting LCD panel and a 2.36 million-dot OLED electronic viewfinder are available. Integrated Wi-Fi networking, which includes NFC capability, enables the camera to be controlled remotely from a connected mobile device, as well as allowing quick sharing of images captured by the camera.

BIONZ X image processor and Exmor sensor with full-frame capture

A 12.2MP full-frame Exmor CMOS sensor and BIONZ X image processor are integrated into the camera’s compact body design, and they work together to provide a wide dynamic range with little noise and high sensitivity.

The a7S has a native sensitivity range of ISO 100-102400, which can be expanded further to ISO 50-409600 with the use of an adapter. When combined with the huge individual pixel size provided by the 12.2MP sensor, this camera is well-suited for usage in low-light circumstances.

A new-generation RGB color filter array, as well as a gapless on-chip lens design, are also included in the sensor’s architecture. Together, these two technologies provide extremely efficient light-gathering capabilities, which further enhance the low noise and high sensitivity of the device’s architecture.

An anti-reflective coating was also put to the seal glass of the image sensor, which helps to reduce surface reflections, glare, and ghosting, resulting in images that are contrast-rich and color-neutral.

Additionally, the sensor and CPU combination provides a slew of performance-related advantages for still photography, including a continuous shooting rate of 5 frames per second in Speed Priority mode and 2.5 frames per second in Continuous Autofocus mode.

The contrast-detection autofocus technology utilizes 25 different points to rapidly and precisely acquire focus in low light levels as low as -4 EV, allowing the photographer to operate in a wide range of shooting circumstances with the camera.

A full pixel read-out combined with a clean HDMI output for 4K recording is provided.

Line-skipping has been the Achilles Heel of video recording DSLR and Mirrorless cameras since the introduction of video recording technology in the early 1990s. Most full-frame and APS-C still cameras have extremely high pixel counts, which is great for still photography but makes using the entire sensor when recording video technically infeasible because scaling down, say, a 36 megapixel image in real time would necessitate the use of a much more expensive image processor and generate more heat than a compact body could handle.

Because these cameras routinely skip lines when capturing video, the resulting aliasing and moiré caused by the wide sample gaps, as well as diminished resolution and increased noise, are quite noticeable. The a7S, on the other hand, has a lower resolution sensor that is optimized for video recording and provides a complete sensor readout without any line skipping.

This means that whether you are recording internally at 1080p or externally in UHD 4K, you will get a crisp image that is free of significant aliasing and moiré..

When the high-quality 50 Mbps XAVC S Codec isn’t enough, the a7S can output uncompressed UHD 4K (3840 x 2160) at a 4:2:2 color depth through HDMI to third-party recorders that are compatible with the a7S.

Alternatively, if you are recording internally to a memory card, the HDMI output may be set to 1080p at 4:2:2 for use with external recorders or HD monitors that do not support 4K input. The following is the complete list of HDMI output signals that are supported:

  • 3840 x 2160 (30p/24p) pixel resolution
  • 1920 x 1080 (60 frames per second/24 frames per second)
  • A resolution of 1920 x 1080 (60i), a color space of YCbCr 4:2:2 8-bit/RGB 8-bit

High-Definition Video Recording at up to 120 frames per second

While the a7S is capable of recording in the normal 24p/30p/60i formats, it is also capable of recording at significantly greater frame rates for slow-motion playback, albeit at poorer resolutions. The full sensor may be used to record 1080p video at up to 60 frames per second.

Additionally, employing a roughly APS-C-sized center cut of the sensor, 120 frames per second is achievable at 720p. When recorded at 120 frames per second and played back in 24p, the effect is approximately 5x slower than normal.

Color Profiles & Swatches that may be customized

-Log2 Gamma is a logarithmic scale.

In order to ensure that the a7S can make use of its wide dynamic range while shooting video, the camera has incorporated a variety of configurable color and gamma settings. Gamma, black level, knee, color level, and other parameters may be customized by the user.

Also available is the S-Log2 Gamma Curve used on high-end Sony Cinema cameras, which compresses up to 1300 percent more dynamic range into the video signal than typical REC709, allowing for greater post-production flexibility.

Timecode Options that are adaptable

The a7S offers a variety of timecode recording options to accommodate a variety of workflows. It has the standard “Record Run” mode, which only advances the timecode when recording, as well as the “Free Run” mode, which allows you to record without stopping “It is possible to use a timecode that advances the timecode even when not recording, which is useful for synchronizing multiple cameras during live events. Timecode can be recorded in both drop frame and non-drop frame modes, and it can also be recorded in drop frame mode.

Timecode output through HDMI is also possible while recording internally on the a7S, and timecode output is also possible when exporting 4K via HDMI.

Live Video Overlays are a type of video overlay that is displayed in real-time.

Professional video users have become accustomed to relying on real-time graphic overlays and assists, and the a7S has many of the same functions. Among these is focus peaking to assist with manual focusing, zebra markings to aid in judging overexposure, and an audio level overlay to aid in mixing audio tracks.

It is also possible to use focus magnification to double-check crucial focus. Both a viewfinder and an LCD display are available for these cameras.

Headphone jack and audio input jack

The a7S is equipped with a 3.5mm microphone input port, which allows it to be used with external microphones.

Additionally, for those who want more, the Sony a7S is compatible with the Sony XLR-k1M XLR Adapter, which allows users to record professionally balanced XLR audio signals with phantom power and adjustable mic/line inputs using the Sony a7S.

The a7S has a 3.5mm headphone port for monitoring audio, as well as real-time audio levels that can be shown on the screen for visual reference.

Design of the Body

  • The a7S is based on a small and stylish body design, and it includes a huge rear LCD panel as well as a dazzling electronic viewfinder for framing your shots. The back 3.0 is a 3.0 “The 921.6k-dot Xtra Fine LCD has a tilting design (up 90° and down 45°) that allows it to be used from both high and low angles to maximize productivity.
  • The addition of WhiteMagic technology, which substantially boosts brightness for easy seeing in strong sunlight, also helps to improve visibility with the back monitor.
  • When shooting at eye level, the 0.5 stop is sufficient “The XGA OLED electronic viewfinder has a high 0.71x magnification and a 2.36 million-dot resolution, allowing for precise monitoring capabilities in low light conditions.

Built-in Wi-Fi connectivity, as well as NFC functionality

The a7S’s built-in Wi-Fi connectivity enables it to rapidly transmit photographs to mobile devices for direct uploading to social media sites, sending through email, and storing images in cloud storage services.

Near Field Communication (NFC) is also enabled, allowing for a one-touch connection between the camera and compatible mobile devices without the need for any complicated set-up. If a mobile device is connected to the camera, it may also display a live view image on its screen and control the camera’s shutter remotely.

Additional PlayMemories Camera Apps are enabled through the camera’s built-in Wi-Fi connection, allowing you to customize the camera’s functions based on your preferred shooting style. A wide range of apps are available to assist with the creation of portraits, detailed close-ups, sports, time-lapse photography, motion photography, and other sorts of photos.

Additional Camera Functions

  • Posterization (color and black and white), Pop Color, Retro Photo, Partial Color (R/G/B/Y), High Contrast Monochrome, Toy Camera, Soft High-Key, Soft Focus, HDR Painting, Rich-Tone Monochrome, Miniature, Watercolor, and Illustration are some of the picture effect options available.
  • The following style settings can be created: Standard, Vivid (with +/- 3 step contrast and saturation adjustment), Neutral (with +/- 3 step clarity adjustment), Deep (with +/- 3 step sharpness adjustment), Light (with +/- 3 step contrast and saturation adjustment), Portrait (with +/- 3 step sharpness adjustment), Landscape (with +/- 3 step sharpness adjustment).
  • RGB color space (with sync gamut) and Adobe RGB color system (which is compatible with TRILUMINOS Color) are also supported.
  • Among the Picture Profile options are Black Level, Gamma (Movie and Still), Gamma (ITU709 [800 percent], S-Log2), Black Gamma, Knee (color mode), Color Level (color phase) (color depth), Detail (detail depth), Copy (copy), Reset (reset) and Reset (reset).
  • Scene Selection modes include Portrait, Landscape, Macro, Sports Action, Sunset, Night Portrait, Night Scene, Hand-held Twilight, and Anti Motion Blur. There are also other scene enhancement options.
  • Face Detection is a feature that allows you to base exposure and focus on up to eight different faces. Furthermore, by keeping the critical focus on a subject’s eye, Eye AF may be utilized to achieve even higher levels of accuracy.
  • Using the rule of thirds, Auto Object Framing automatically creates compositions centered on portrait and still life subjects, and aesthetically crops imagery based on a variety of factors such as the subject’s location within the frame, exposure to your subject, and, in the case of portraiture, the direction in which the subject is looking.
  • 2x Clear Image Zoom may be used to effectively twice the magnification provided by any lens currently in use while causing the least amount of deterioration to the image. For even higher magnification, Smart zoom options of 1.5x and 2x, as well as 4x digital zoom, are also available.
  • Single (with or without shot information, Y RGB histogram, and highlight/shadow warning), 9/25-frame index view, and multi-frame index view is the available playback options. Mode for a larger display (Maximum magnification L: 13.3x, M: 8.7x, S: 6.7x), Various options for auto review (10/5/2 sec, off), image orientation (auto/manual/off selectable), and a variety of other options. Slideshow, panorama scrolling, and more are all available. The selection of a folder (still, date, MP4, AVCHD/XAVC S), as well as the selection of a frame rate. Forward/Rewind (in a movie), Delete, and Protect are all options.

Sony a7s Specs

Body typeSLR-style mirrorless
Max resolution4240 x 2832
Other resolutions4240 x 2384, 2768 x 1848, 2768 x 1560, 2128 x 1416, 2128 x 1200, 1376 x 920, 1376 x 776
Image ratio w:h3:2, 16:9
Effective pixels12 megapixels
Sensor photo detectors12 megapixels
Sensor sizeFull frame (35.8 x 23.9 mm)
Sensor typeCMOS
ProcessorBionz X
ISOAuto, 100-102400
Boosted ISO (minimum)50
White balance presets10
Custom white balanceYes
Image stabilizationNo
Uncompressed formatRAW
JPEG quality levelsExtra fine, fine, standard
AutofocusContrast Detect (sensor)Multi-areaCenterSelective single-pointSingleContinuousFace DetectionLive View
Digital zoomYes (2x)
Manual focusYes
Number of focus points25
Lens mountSony E
Focal length multiplier
Articulated LCDTilting
Screen size3″
Screen dots921,000
Touch screenNo
Screen typeTFT-LCD
Live viewYes
Viewfinder typeElectronic
Viewfinder coverage100%
Viewfinder magnification0.71×
Viewfinder resolution2,400,000
Minimum shutter speed30 sec
Maximum shutter speed1/8000 sec
Aperture priorityYes
Shutter priorityYes
Manual exposure modeYes
Subject / scene modesYes
Built-in flashNo
External flashYes (via Multi Interface shoe)
Continuous drive5.0 fps
Self-timerYes (2 or 10 sec; continuous (3 or 5 exposures))
Metering modesMultiCenter-weightedSpot
Exposure compensation±5 (at 1/3 EV, 1/2 EV steps)
AE Bracketing±5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps)
WB BracketingYes
ResolutionsXAVC S 1080/60p(50Mbps), 30p (50Mbps), 24p (50Mbps). 720 120p (50Mbps). AVCHD 60p (28Mbps), 60i (24Mbps/17Mbps), 24p (24Mbps/17Mbps)
Videography notesXLR support via adapter
Storage typesSD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
USBUSB 2.0 (480 Mbit/sec)
HDMIYes (micro-HDMI port with 4:2:2 8-bit 4K or 1080 video output)
Microphone portYes
Headphone portYes
Wireless noteswith NFC and wireless control via smartphone
Remote controlYes (wired)
Environmentally sealedYes
BatteryBattery Pack
Battery descriptionNP-FW50 lithium-ion battery and charger
Battery Life (CIPA)380
Weight (inc. batteries)489 g (1.08 lb / 17.25 oz)
Dimensions127 x 94 x 48 mm (5 x 3.7 x 1.89″)
Orientation sensorYes
Timelapse recordingNo

About Author


Freelance journalist Corey has been writing about digital photography since 2006, first as a deputy editor and then as the editor of a variety of photographic journals. Featuring expert product reviews and in-depth features

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