Sony a7S III Mirrorless Camera
Sony a7S III Mirrorless Camera
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Overview / Product Description
Sony a7S III Mirrorless Camera
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 noiseThe new full-frame 12.1-megapixel 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-stop wide dynamic range, and reduced rolling shutter, with the sensor also providing focal-plane phase-detection AF.
Up to 8x more powerful BIONZ XRTM image processorAlong 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.
Superlative movie performance
Stunning AF performance even at 4K 120pThe 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 recordingRecord 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 availableAs 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.
 All-Intra (All-I)  Long GoP  Group of Pictures
Superior quality and smaller files with XAVC HSThe 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.
Sony's renowned sensitivity delivers expanded ISO 409600The 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.
S-Log3 gamma, S-Gamut3.Cine gamut as on pro camcordersThe S-Log3 gamma curve and S-Gamut3.Cine color gamut shared with pro camcorders provides a wider dynamic range and easier color 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 color depth.
 High flexibility to fine-tune images as desired (color grading required)
 Instant high-quality image (color grading not required)
Image quality improvementsThe new BIONZ XR image processing engine delivers improvements in color reproduction, stability against different light sources, natural tonal gradation and roll-off, and reduced rolling shutter.
16-bit RAW HDMI outputFor 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 recordingWhile 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 before final 4K delivery.
A shooting revolution
Fast Hybrid AF for accuracy and tenacityThe 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 120p frame rates.
Powerful focus control for solo shootersWith 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 moviesReal-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 operationReal-time Tracking analyzes the subject color, 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 stabilizationA highly accurate image stabilization unit and gyro-sensor are provided, delivering 5-axis optical image stabilization.
 Yaw  Roll  Pitch
Active Mode for hand-held shootingThe 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.
Digital audio interface for clear sound recordingA 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 recordingA unique Sony Σ (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 comfortResponding 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.
Advanced still functions and performance
High ISO sensitivityWith 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 stillsThe 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 performanceUse 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 focusingAF 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 engineThe 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 modesThe 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 slotsBoth 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 shootingThe 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 viewfinderThe 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 operabilityThe 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 structureBased on requests from Sony's 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 operationThe 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 compatibleAs 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 connectivityFor 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 shootingEither wired or wireless remote shooting is available from a PC, or a mobile device with Imaging Edge MobileTM installed, for more efficient workflows and shooting in challenging environments.
Imaging Edge DesktopElevate your photography with Imaging Edge Desktop applications. Use "Remote" to control and monitor shooting live on your PC screen; "Viewer" 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 efficiently.
Capture One for SonyCapture One Express (for Sony) 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.
SPECIFICATIONS AND FEATURESDesigned for professionals, the α7S III builds on the strengths of the S series, such as high sensitivity and wide dynamic range, while providing pro features like enhanced AF, optical image stabilization, and 4K 120p recording. Incorporating a powerful new engine in its compact body, the camera delivers a wide range of visual experiences.
- Newly developed 12.1-megapixel2 back-illuminated Exmor RTM CMOS image sensor
- Newly developed BIONZ XR image processing engine with up to 8x the processing performance
- Movie-making with 4K 120p, 10-bit 4:2:2 recording capability
- Fast Hybrid AF with 759 phase-detection AF points and enhanced Real-time Eye AF
- Body-integrated 5-axis optical image stabilization, Active Mode for movies
- SENSOR TYPE: 35 mm full-frame (35.6 × 23.8 mm), Exmor R CMOS sensor
- NUMBER OF PIXELS (EFFECTIVE): Approx. 12.1 megapixels
- ISO SENSITIVITY (RECOMMENDED EXPOSURE INDEX): Still images: ISO 80–102400 (ISO numbers up from ISO 40 to ISO 409600 can be set as expanded ISO range.), Movies: ISO 80–102400 equivalent (ISO numbers up to ISO 409600 can be set as expanded ISO range.)
- BATTERY LIFE (STILL IMAGES): Approx. 510 shots (Viewfinder) / Approx. 600 shots (LCD monitor) (CIPA standard)
- VIEWFINDER TYPE: 1.6 cm (0.64 type) electronic viewfinder (color)
- MONITOR TYPE: 2.95 inch (3.0-type) wide type TFT