Sony A7s III Mirrorless Camera Body - 809889

Sony A7s III Mirrorless Camera Body - 809889

For visual trailblazers

With extreme full-frame movie performance including high sensitivity (expanded ISO up to 409600), 15-stop wide dynamic range, 4K 120p, 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-megapixel back-illuminated Exmor R^TM 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-stop wide dynamic range, and reduced rolling shutter, with the sensor also providing focal-plane phase-detection AF.

Up to 8x more powerful BIONZ XR 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 power. 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 120p

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 second or in slow motion. With the resolution and depth of field only possible from a full-frame sensor, the results are spectacular.

10-bit 4:2:2 recording

Record right on the camera with the amazing richness of 10-bit depth and 4:2:2 color 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

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 sizes.

Our 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-megapixel full-frame sensor achieves low noise throughout the sensitivity range, and can capture usable images in near-total darkness.

16-bit RAW HDMI output

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

Efficient editing through proxy recording

While recording high-bitrate 4K movies, HD proxies (in 8 or 10-bit depth) can be generated in-camera. 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 rates.

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% on profile or partially-obscured faces. Tenacious eye tracking lets you concentrate on composition even with a shallow focus depth.

Real-time Tracking with intuitive touch operation

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

Active Mode for hand-held shooting

The new Active Mode 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 resolution.

High ISO sensitivity

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.

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.

Outstanding continuous shooting performance

Use your choice of mechanical or electronic shutter for continuous burst shooting, with AF/AE tracking, at up to 10 fps. Capture decisive moments with over 1,000 frames of continuous uncompressed RAW shooting possible

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-6, 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 color reproduction, particularly of skin tones, and texture depiction in still images.

New HEIF format and HLG image capture modes

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

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-dot 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-dot high-definition electronic viewfinder

The new EVF offers resolution, contrast and color unlike anything in its class. It also offers world-leading 0.9x finder magnification, 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.

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 GHz Wi-Fi compatible

As well as 2.4 GHz, 5 GHz 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.

Features

• Newly developed BIONZ XR™image processing engine with eight times more processing power and a brand new 12.1-megapixel (approx., effective) back-illuminated full-frame Exmor R™ CMOS image sensor,significantly reduced rolling shutter effect.
• Ultra-high sensitivity with ISO range expandable from 40 –409,600v, and improved image quality by approximately stop noise reduction the middle and high sensitivity ranges.
• Video recording capabilities include 4K 120pi, 10 bit 4:2:2 color depth, All-Intra recording, XAVC HS format with H.265 codec and more 15+ stop dynamic range for movies.
• 4K60p 16-bit RAW video HDMI output for the first time in the Alpha™series.
• Fast Hybrid AF system with 759 point phase-detection AF sensors covering 92% of image sensor.
• Enhanced Real-time Eye AF for movie recording and still image recording
• New heat dissipating mechanism and dual slot relay recording enables over one-hour long 4K 60p 10-bit 4:2:2 movie shooting.
• 5-axis optical in-body image stabilization supports handheld movie shooting,with added Active Mode support especially difficult handheld movie shooting
• World’s brightest and largest new 0.64-type 9.44 million-dot (approx.) OLED electronic viewfinder.
• Side Opening variable angle LCD screen enhances shooting flexibility.
• Completely redesigned menu system with touch screen interface and touch operation.
• High-speed continuous still image shooting at up to 10fps for more than 1,000 consecutive uncompressed RAW images with full AF / AE tracking.
• Dual CFexpress Type A card slots that enable high speed data processing while keeping the compact size.

What our Experts Think

• Unrivaled Low‑Light & Video Leader: The Sony A7S III Mirrorless Camera Body excels at video creation and low‑light performance, with superb 4K up to 120 fps, 10‑bit 4:2:2 internal recording, and clean footage even in challenging light.

• Professional Video Workflow: Supports unlimited 4K recording, external 16‑bit RAW output via HDMI, S‑Log3/HLG profiles, and advanced codecs, delivering cinematic quality and flexibility.

• Low‑Light Photo Strength: Full‑frame 12.1 MP sensor with huge pixels and ISO up to 409,600 produces extremely clean images in dim environments — ideal for astrophotography, events, and night shooting.

• Fast & Reliable Autofocus: 759‑point hybrid AF with Real‑Time Eye AF provides accurate tracking for moving subjects in both stills and video scenarios.

• Stabilized Handheld Shooting: 5‑axis in‑body image stabilization (up to ~5.5 stops) ensures steady handheld footage even with long lenses.

• Professional Ergonomics: Large 9.44 M‑dot EVF, fully articulating touchscreen, dual memory card slots, and robust weather‑sealed body make it capable in demanding field use.

• Still Photography Caveat: With a 12.1 MP resolution, stills won’t match higher‑resolution cameras for large prints or heavy cropping but deliver excellent quality for most applications.

Q&A

Q: What type of camera is the Sony A7S III?
A: The A7S III is a professional full-frame mirrorless camera designed for low-light photography, videography, and content creation with high sensitivity and dynamic range.

Q: What sensor does the A7S III feature?
A: It has a 12.1MP full-frame Exmor R CMOS sensor optimized for ultra-low-light performance and clean high-ISO shooting.

Q: What video capabilities does the A7S III support?
A: Supports 4K UHD up to 120p, 10-bit 4:2:2 internal recording, S-Log3/S-Gamut3, and slow-motion Full HD up to 240p for professional video workflows.

Q: How fast is the continuous shooting?
A: Capable of up to 10 fps continuous shooting with full AF/AE tracking for still photography.

Q: What autofocus features are included?
A: Features 759 phase-detection AF points, Real-time Eye AF for humans and animals, and advanced subject tracking for precise focus in challenging environments.

Q: What display and viewfinder does it have?
A: Equipped with a 3.0-inch fully articulating LCD touchscreen and a 3.69M-dot OLED electronic viewfinder for high-resolution monitoring and flexible shooting angles.

Q: What connectivity options are available?
A: Includes Wi-Fi, Bluetooth, USB-C, HDMI, dual card slots compatible with CFexpress Type A/SD, and FTP support for professional workflows.

Q: How durable is the A7S III?
A: Built with a magnesium alloy body, full weather sealing, and robust construction for professional outdoor use.

Q: Who is the Sony A7S III ideal for?
A: Perfect for videographers, low-light photographers, filmmakers, and content creators needing professional-level video and photography capabilities in a compact mirrorless body.

Maintenance Tips

• Sensor & Body Cleaning: Use a soft blower and lint‑free cloth to gently remove dust; avoid direct contact with the sensor — deep cleaning should be done by a professional to reduce risk of damage.

• Keep Contacts Clean: Wipe lens mount and memory card contacts carefully with a dry cloth to ensure reliable communication and data transfer.

• Protect from Moisture & Dust: Store the camera in a weather‑sealed bag with silica gel packs; use rain covers in wet or dusty conditions to protect internal components.

• Battery & Power Care: Use genuine NP‑FZ100 batteries, charge before use, avoid deep discharge, and remove batteries for long‑term storage.

• Firmware Updates: Regularly update firmware to improve autofocus performance, stability, and compatibility with current production workflows.

• Screen & EVF Protection: Apply a high‑clarity screen protector to the LCD/EVF to prevent scratches and maintain visibility.

• Safe Handling: Avoid extreme heat, shocks, and drops — use a padded camera bag and wrist/neck strap to protect the body while shooting or traveling.