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Web Code: 567SON128  •  Mfr Code: ILCE7SM3B
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Product Highlights
  • 12.1 MP Mirrorless Camera
  • Full-Frame Sensor
  • 4K 120p Recording
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For visual trailblazers

With extreme full-frame movie performance including high sensitivity (expanded ISO up to 409600), 15-stop wide dynamic range, 4K 120p2, fast and dependable autofocusing, and extra-strong image stabilization, the α7S III again raises the bar for movie makers.



Large pixels deliver high sensitivity and low noise

The new full-frame 12.1-megapixel3 back-illuminated Exmor RTM CMOS image sensor packs major innovations in light gathering, wiring and output optimization. These deliver blazing doubled readout speeds, superb image quality throughout the whole sensitivity range, 15-stop4 wide dynamic range, and reduced rolling shutter, with the sensor also providing focal-plane phase-detection AF.


Up to 8x more powerful5 BIONZ XRTM image processor

Along with the new sensor and its unprecedented speed, the BIONZ XR image processing engine has also been newly developed and packs up to 8x more processing power5. With a future-oriented architecture, it delivers high-quality images faster for superlative still and video expression, as well as dramatically improved camera interface responsiveness.



Stunning AF performance even at 4K 120p2

The new Exmor R full-frame image sensor and revolutionary BIONZ XR image processing engine deliver always-active pinpoint AF for astonishing detail in both space and time, and stunning 4K movies even at 120 frames per second2 or in slow motion. With the resolution and depth of field only possible from a full-frame sensor, the results are spectacular.

Sony Alpha A7S III AF Performance

Sony Alpha A7S III 10-bit Recording

10-bit 4:2:2 recording

Record right on the camera with the amazing richness of 10-bit depth and 4:2:2 colour sampling, for far greater flexibility in image grading, post-processing and compositing.



All-Intra encoding available

As well as Long GOP, All-Intra encoding is now provided. This encodes every frame independently at bitrates up to 600 Mbps, to capture complex motions more accurately for recording on either internal or external media, and allow more efficient editing workflows.
[1] All-Intra (All-I) [2] Long GoP [3] Group of Pictures

Sony Alpha A7S III All-Intra Encoding Available

Sony Alpha A7S III - Higher quality, smaller file size

Superior quality and smaller files with XAVC HS

The new XAVC HS recording format uses HEVC/H.265 encoding to achieve twice the compression efficiency of AVC/H.264 encoding, for superior image quality and smaller file sizes6.



Sony's Renowned sensitivity delivers expanded ISO 409600

The renowned sensitivity of the series scales new heights, with an expanded ISO range for movies from 80 to a remarkable 409600 (standard range 80—102400). With advanced light-gathering and output optimization, the 12.1-megapixel3 full-frame sensor achieves low noise throughout the sensitivity range, and can capture usable images in near total darkness.

Sony Alpha A7S III - High sensitivity - ISO 409600

Sony Alpha A7S III - Wider Dynamic Range and Colour Matching

S-Log3 gamma, S-Gamut3.Cine gamut as on pro camcorders

The S-Log3 gamma curve and S-Gamut3.Cine colour gamut, shared with pro camcorders, provide wider dynamic range and easier colour matching for smoother post-production workflows.



HLG (Hybrid Log-Gamma)

HLG (Hybrid Log Gamma) simplifies HDR production, producing footage for HLG-compatible BRAVIA TVs on the camera with no complex post-production, and smooth gradations from the 10-bit colour depth.
[1] High flexibility to fine-tune images as desired (colour grading required)

[2] Instant high-quality image (colour grading not required)
Sony Alpha A7S III - HLG

Sony Alpha A7S III - Improved Image Quality

Image quality improvements

The new BIONZ XR image processing engine delivers improvements in colour reproduction, stability against different light sources, natural tonal gradation and roll-off, and reduced rolling shutter.


Sony Alpha A7S III - 16-Bit RAW HDMI Output

16-bit RAW HDMI output

For demanding post-production workflows, 16-bit RAW output7 is available via HDMI connection to compatible external recorders8 while XAVC HS 4K, XAVC S 4K, or XAVC S-I 4K, and proxy files are simultaneously captured in-camera.

Sony Alpha A7S III - Efficient Editing

Efficient editing through proxy recording

While recording high-bitrate 4K movies, HD proxies (in 8 or 10-bit depth) can be generated in-camera9. Editing the smaller proxy files reduces computer load and speeds up workflow prior to final 4K delivery.



Fast Hybrid AF for accuracy and tenacity

The wide-area AF uses intelligent tracking and on-sensor phase-detection covering most of the frame. The result is that every bit of supremely accurate and tenacious AF performance is extracted in combination with high-quality E-mount lenses, even when shooting moving subjects at shallow depths-of-field in 4K and at 120p frame rates2.

Sony Alpha A7S III - Fast Hybrid AF

Sony Alpha A7S III - Powerful Focus Control

Powerful focus control for solo shooters

With AF Transition Speed selectable over 7 levels, and AF Subject Shift Sensitivity over 5 levels, you can better convey your creative intentions when switching subjects or, for example, rack focusing. A simple touch can temporarily activate AF even during manual focus operation.



Real-time Eye AF for movies

Real-time Eye AF uses AI to ensure pinpoint focusing precision for eyes, with performance now improved by 30%10 on profile or partially obscured faces. Tenacious eye tracking lets you concentrate on composition even with a shallow focus depth.

Sony A7S III - Realtime Eye AF for Movies

Sony A7S III - Realtime Tracking with Touch Control

Real-time Tracking with intuitive touch operation

Real-time Tracking analyzes subject colour, pattern, depth, and face information to track the subject. Touch Tracking intuitively and automatically tracks a subject touched on the LCD screen.



In-body 5-axis image stabilization

A highly accurate image stabilization unit and gyro-sensor are provided, delivering 5-axis optical image stabilization.
[1] Yaw [2] Roll [3] Pitch



Active Mode for hand-held shooting

The new Active Mode11 12 provides increased stabilization for movie shooting. To preserve image quality, the BIONZ XR processor accurately measures camera shake and compensates optically. This makes stable video possible even when shooting hand-held where space restraints prevent gimbal use, while walking, and at 4K resolution12.

Sony A7S III - Active Mode


Digital audio interface for clear sound recording

A digital audio interface added to the Multi Interface (MI) Shoe allows direct 24-bit input. Available settings are 48 kHz/16-bit 2-ch, and by using the optional XLR-K3M adaptor kit, 48 kHz/24-bit 2-ch and 48 kHz/24-bit 4-ch.

Unique heat dissipation, for dependable recording

A unique Sony ∑ (sigma) shaped graphite heatsink is built into the image-stabilization unit. This dissipates heat 5x more effectively for extended recording time, without interfering with image stabilization.

Movie-shooting comfort

Responding to feedback from professional users, the MOVIE button has been moved to the top face for improved operability in any shooting position. Mode dial ordering and speed of switching have also been improved.



High ISO sensitivity for Still Photography

With an amazingly wide standard ISO range of 80—102400 (expandable to 40—409600 for stills), the α7S III offers incredible creative opportunities. The newly developed image sensor and image processing algorithms produce even cleaner images and more natural textures than the previous α7S II model, even when shooting in near total darkness.


Sony A7S III - Hybrid AF for Stils

Fast Hybrid AF for stills

The Fast Hybrid AF system combines speed and precision. With 759 focal plane phase-detection sensors and 425 contrast-detection points distributed across most of the image area, the α7S III quickly finds and tracks your subject throughout the frame.

Sony A7S III - Continuous Shooting

Outstanding continuous shooting performance

Use your choice of mechanical or electronic shutter for continuous burst shooting, with AF/AE tracking, at up to 10 fps14. Capture decisive moments with over 1000 frames of continuous uncompressed RAW shooting possible15.



Highly sensitive AF for low-light focusing

AF algorithm advances have allowed the α7S III to achieve autofocus in lighting conditions as dim as EV-616, where subjects are barely even visible with the naked eye.

Still-image quality advances through new sensor and engine

The newly developed image sensor and image processing engine deliver improvements in colour reproduction, particularly of skin tones, and texture depiction in still images.

New HEIF format and HLG image capture modes17

The HEIF image file format is supported, offering better image quality and greater compression efficiency than JPEG, plus 10-bit colour. High Dynamic Range still images can also be captured in HLG mode for viewing on compatible TVs.



Workflow efficiency

Two CFexpress Type A-compatible media slots

Both card slots support both ultra-fast CFexpress Type A cards, allowing high-bitrate recording and fast buffer clearance, and SDXC UHS-II cards. Parallel and Relay recording are also available.

Vari-angle LCD monitor for comfortable movie shooting

The variable-angle 1.44 million-dot18 3.0-type touch screen features a side-open design, for flexible positioning and improved visibility when mounting on gimbals or rigs.

9.44 million-dot18 high-definition electronic viewfinder

The new EVF offers resolution, contrast and colour unlike anything in its class19. It also offers world-leading 0.9x finder magnification20, a 41° diagonal field of view, and a 25-mm-high eyepoint.



Advanced operability

The menu structure has been redesigned to reflect feedback from both pro photographers and videographers. Camera settings are now more intuitive and the camera is more responsive to setting changes.



New menu structure

Based on requests from our most demanding professional users, major improvements have been made to the menu structure, for improved at-a-glance readability and reduced menu navigation.

Sony A7S III - New Menu

Sony A7S III - Intuitive Touch Operation

Intuitive touch operation

The menu screen can be operated by touch, while the playback screen features swiping, and pinch-to-zoom. Operability of the touch functions when shooting has also been improved.



5 GHz25 Wi-Fi compatible

As well as 2.4 GHz, 5 GHz25 Wi-Fi® connectivity is provided for remote operation, wireless preview, and faster and more stable data transfer of both still images and video.

Wired LAN connectivity

For complex, interference-prone environments, or higher bandwidth needs, 1000BASE-T wired LAN connectivity is available by connecting a compatible USB-Ethernet adaptor cable to the camera’s USB Type C® port.

Remote preview and shooting

Either wired or wireless remote shooting is available from a PC, or from a mobile device with Imaging Edge Mobile™ installed, for more efficient workflows and shooting in challenging environments.



Imaging Edge Desktop™

Elevate your photography with Imaging Edge Desktop applications. Use “Remote” to control and monitor shooting live on your PC screen; “Viewer”26 to quickly preview, rate, and select photos from large image libraries; and “Edit” to develop RAW data into high-quality photos for delivery. Get the best from Sony RAW files, and manage your productions more efficiently27.



Capture One for Sony

Capture One Express (for Sony)28 is free award-winning editing software that provides RAW development, easy management and powerful editing tools. Capture One Pro (for Sony) is also available for even more editing tools and tethered shooting capability.



2 With 10% image crop
3 Approximate effective pixels.
4 S-Log3 movies, Sony tests.
5 Compared to the BIONZ X image processing engine.
6 XAVC HS compatible editing software is required.
7 RAW video output is full-frame 4264 x 2408 [16:9] data from the image sensor with a choice of 60p/50p/30p/25p/24p frame rates and colour spaces.
8 Compatible recorders to be announced. (As of July 2020, Atomos Ninja V is expected.)
9 Proxy recording is not available in the following conditions: (a) normal movie recording at a [Record Frame Rate] of 120p (100p) or higher; (b) S&Q movie recording at a [Record Frame Rate] of 120p (100p) or higher; (c) S&Q movies at a [Frame Rate] of 120 (100) fps or higher.
10 Compared to models with BIONZ X. Sony internal measurement.
11 Slight image crop in Active Mode. “Standard” setting recommended for focal lengths of 200 mm or longer.
12 Active Mode is not available when recording at frame rates of 120 (100) fps or higher, or when using the S&Q feature.
13 Sony test conditions.
14 Up to 10 fps in continuous "Hi+"" mode. CFexpress Type A memory card. Sony tests.
15 When using a CFexpress Type A memory card.
16 In AF-S mode, at F2.0, ISO 100.
17 A corresponding environment is required for playback of still images recorded in HEIF.
18 Approximate.
19 As of the July 2020 product announcement. Sony survey of mirrorless digital cameras.
20 50-mm lens, infinity, -1m-1 dioptre.
21 Not guaranteed to be 100% dust- and moisture-proof.
22 Compatibility is not guaranteed with all USB PD devices. The internal battery will not be charged while camera power is ON and the camera is in use.
23 USB charging and power delivery are only supported via the USB Type-C® terminal. A battery must be installed in the camera when supplying USB power. The internal battery may drain even if USB power is supplied, depending on the adapter used and camera operating conditions.
24 Some functions can only be assigned to certain buttons.
25 5 GHz communication may be restricted in some countries and regions.
26 Please use the latest version.
27 Does not support full functional compatibility with some camera models. See the Sony support site for details:
28 Please contact Phase One regarding all inquiries as to usage and support including functional compatibility of Capture One Express (for Sony) and Capture One Pro (for Sony).



Your Sony Camera is Now a Webcam

Easily turn your Sony camera into a high-quality webcam and stay connected with family, friends, coworkers, and followers. Outperform your stock webcam and bring high-resolution picture to your internet streaming along with advanced technologies like face priority autoexposure, Eye Autofocus, bokeh control, and more, at no additional cost.



Imaging Edge Webcam lets you connect your Sony camera to a PC and use it as a high-quality webcam for live streaming or video conferencing.



Benefits of using your Sony camera as a webcam

  1. The camera can capture faces with natural colors under any environmental conditions, including low light and back lighting.
  2. A large sensor can make the subject stand out with a blurred background.
  3. Auto-focusing keeps track of vivid facial expressions with Real-time Eye AF and Real-time Tracking. (* Only when the camera supports the relevant functions.)
  4. Easy setup: Once you connect your camera to a PC with a USB cable, you only need to select the camera to be used in live streaming or video conference service.
Imaging Edge Logo

Sony Imaging Edge - Step 1, Download and install the app

1. Download & Install

To get the app, download the app to your computer, and run the installation.



2. Set Up the Camera

Follow these steps on your Sony camera to turn on the PC Remote function

MENU > (Network) > [PC Remote Function] > [PC Remote] > [On]

Sony Imaging Edge - Step 2, Set up the camera

Sony Imaging Edge - Step 3, Start up the Webcam app

3. Start Up “Imaging Edge Webcam” App

Run the application and connect the camera to the computer using a USB cable. Select “Sony Camera” from your video communication’s dropdown menu.



Additional Notes:

  • The aspect ratio is automatically set to 16:9 when using the Imaging Edge Webcam software and will remain on that setting after use. You'll need to set it to a previous value if necessary.
  • The resolution of Imaging Edge Webcam software is 1,024 x 576 pixels.
  • If you want improved resolution, you are using an operating system other than Windows® 10 64-bit, macOS 10.13 - 10.15, or macOS 11.0, and your camera has a HDMI port, then information is available here to explain how to livestream without using the Imaging Edge Webcam software.


Camera Type: Mirrorless Camera
Camera Style: Pro
Lens Mount: Sony E
Camera Format: Full-Frame
Effective Pixels: 12.1MP
Approx. Resolution: 12MP
Sensor Type/Size: Exmor R CMOS / 35.6 x 23.8 mm / 1.40 x 0.94 in
File Formats: JPEG, RAW, HEIF
Dust Reduction System: Yes
Memory Card Type: SD/SDHC/SDXC; Cfexpress Type A
Noise Reduction: Yes
Image Stabilization: Yes


ISO Sensitivity: Still images: ISO 80-102400 (Expandable: 40 to 409600), Movies: ISO 80-102400 equivalent (Expandable up to 409600)
Shutter: Still: 1/8000 to 30 sec, Bulb, Movie: 1/8000 to 1/4 sec
Remote Control: Remote control via Smartphone, NFC One-touch remote, PC Remote
Metering Method: 1200-zone evaluative metering; Multi-segment, Centre-weighted, Spot, Spot Standard/Large, Entire Screen Avg., Highlight
Exposure Modes: AUTO (iAuto), Programmed AE (P), Aperture priority (A), Shutter-speed priority (S), Manual (M), Movie (Programmed AE (P) / Aperture priority (A) / Shutter-speed priority (S) / Manual (M) / Flexible Exp. Mode), Slow and Quick Motion (Programmed AE (P) / Aperture priority (A) / Shutter-speed priority (S) / Manual (M) / Flexible Exp. Mode)
White Balance Modes: Auto / Daylight / Shade / Cloudy / Incandescent / Fluorescent / Flash / Underwater / Colour Temperature (2500 to 9900K) & colour filter / Custom
Burst Rate: 3 to 10 fps


Continuous Shooting: 3 to 10 fps
Self Timer: 2 sec , 5 sec, 10 sec, Continuous
In-Camera Image Editing: Yes
Connectivity: HDMI micro Connector A, Multi/Micro USB Terminal (Type C SuperSpeed USB), Wi-Fi, NFC, Bluetooth, Microphone terminal (3.5 mm Stereo minijack), Headphone terminal (3.5 mm Stereo minijack), Multi Interface Shoe, Vertical Grip Connector, PC Interface

Focus Control


Viewfinder Type: QXGA OLED Eye-Level Viewfinder
Viewfinder Size: 0.64 in
Viewfinder Coverage: 100%
Viewfinder Magnification: 0.90x
Diopter Adjustment: -4.0 to +3.0m-1
Screen Size: 7.5 cm / 3.0 in
Display Screen Type: Tilt Touch LCD

AV Recording

Video Resolution: 4K UHD
File Size: 3840 x 2160, 1920 x 1080, 1280 x 720
Aspect Ratio: 3:2
Audio Recording: XAVC S: LPCM 2ch, LPCM 2ch (48 kHz 16 bit), LPCM 2ch (48 kHz 24 bit), LPCM 4ch (48 kHz 24 bit), MPEG-4 AAC-LC 2ch


Flash Modes: Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction (on/off selectable), Wireless, Hi-speed sync
Max Sync Speed: 1/250 sec.
Flash Compensation: +/-3.0 EV (in 1/3 EV or 1/2 EV steps)


Swivel/Tilt LCD: Yes
Weather Resistant: Yes
Built-in Flash: No


Battery: NP-FZ100
Operating/Storage Temperature: 0-40 C (32 to 104 F)


Weight: 699 g / 24.66 oz
Dimensions (WxHxD): 128.9 x 96.9 x 80.8 mm / 5.12 x 3.87 x 2.75 in
Colour: Black

Kit Lens Performance

Kit Lens Features

Kit Lens Physical

Additional Information


What’s Included:

  • Sony Alpha a7S III Full-Frame Mirrorless Camera (ILCE7SM3/B)
  • Rechargeable Battery NP-FZ100
  • Battery Charger BC-QZ1
  • Power Cord
  • Cable Protector
  • Shoulder Strap
  • Body Cap
  • Accessory Shoe Cap
  • Eyepiece Cup
  • USB-A to USB-C Cable (USB 3.2)
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