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The Sony a7S III stands out with a video and low-light optimized 12.1-megapixel, back-illuminated full-frame sensor. This is paired with a powerful image processor that together delivers incredible sensitivity and dynamic range even during 4K 60p video recording. Dual-slot relay recording, 10-bit 4:4:4 colour, and an agile autofocus system build on top of the awesome performance to take your video productions to a new level.
Professional Video Workflow Solutions
The Alpha 7S III offers in-camera 4K recording up to 120 frames per second, 10-bit depth and 4:2:2 color sampling, producing stunning video recording. The new camera offers a more flexible and efficient post-production workflow with a variety of advanced movie recording modes such as All-Intra and MPEG-H HEVC/H.265 coding (XAVC HS™). The Alpha 7S III makes it easy to integrate video recordings with other professional camcorders by providing three color gamut settings S-Gamut, S-Gamut3, and S-Gamut3.Cine, allowing users to easily match footage shot on the Alpha 7S III with footage shot on the professional camcorders simplifying multi-camera post-production workflow. In addition to S-Log3 gamma curves, the Alpha 7S III supports an HLG (Hybrid Log-Gamma) picture profile with minimum post-production. The Alpha 7S III also allows up to 4K 60p 16-bit RAW output to an external recorder via HDMI Type-A[xvi] connector, offering additional post-production flexibility.
Improved Image Quality
The new CMOS image sensor and BIONZ XR™ image processing engine in the Alpha 7S III delivers legendary S-series sensitivity with significantly enhanced color reproduction and texture renderings for improved overall image quality. The base ISO has been lowered to 80, resulting in a normal range of 80-102,400 (expandable to 80-409,600 for video and 40-409,600 for stills) to provide more flexible ISO plus wide dynamic range with low noise at all settings. It offers improved image quality by approximately 1 stop of noise reduction in the middle and high sensitivity ranges.
Advanced Autofocus Performance for Hybrid use
For the first time in an Alpha 7S series camera, the Alpha 7S III offers Fast Hybrid AF by combining phase-detection and contrast-detection AF, giving it the ability to track subjects over a wide area with outstanding speed, precision and smoothness, even when using a narrow depth of field. Fine focus expression is possible with Sony’s E-mount lenses.
For environments with a lot of movement, Real-time Tracking and Real-time Eye AF are available to maintain constant focus on the intended subject. Sony’s advanced Real-time Eye AF improves detection performance by 30% over the previous system, thanks to the new image processing engine. It ensures accurate, reliable detection, even when the subject’s face looks away. Real-time Tracking is initiated simply by touching the subject on the screen. Real-time Eye AF is automatically initiated when an eye is detected.
New Heat-dissipating Structure
The Alpha 7S III’s design has been updated to ensure effective heat dissipation and minimizes overheating — even during extended continuous recording sessions at 4K 60p 10-bit 4:2:2 video lasting an hour or more. A newly developed unique heat dissipating structure keeps the image sensor and image processing engine temperatures within their normal operating ranges, preventing overheating while maintaining compact body dimensions. The new heat-dissipating structure requires no fan or cabinet vents allowing Alpha 7S III to maintain dust and moisture resistance[xviii].
CFexpress Type A for High-speed Data Transfer
In another world’s first, the Alpha 7S III features two CFexpress Type A compatible media slots which also support UHS-I and UHS-II SDXC/SDHC cards, enabling high write-and-read speeds while keeping the camera body compact in size. CFexpress Type A cards are ideally suited to high-speed continuous RAW still image shooting as well as 4K 120p movie recording at high bit rates, providing next-generation write speeds that can quickly clear the buffers of cameras that generate high volumes of still image and movie data.
High Reliability Gives Creators New Freedom
Professional users need more than just refined features and performance. They also need the reliability and durability demanded of any professional tool. The Alpha 7S III features a redesigned grip for greater comfort and a secure hold, an improved dust removal feature, plus dust and moisture resistance that maximizes reliability in challenging environments. It includes a durable, reliable HDMI Type-A connector, and is the first Alpha series camera to support USB PD (Power Delivery), allowing higher power to be supplied from an external source so that users can continue to record for extended periods with minimal internal battery usage.
Resolution: 12.1 Megapixels
Sensor: 35mm Full-Frame CMOS
Video Resolution: 4K
Auto Focus Points: 759
Lens Mount: Sony E
ISO Sensitivity: 40 - 409,600
Recording Media: SD, CFexpress Type A
Frame Rate: 60p
Audio Inputs: 3.5mm stereo minijack
Power Source: Sony NP-FZ100 battery
Weatherproof: Weather resistant
What's In The Box
Sony A7S III Mirrorless Camera Body
Rechargeable battery NP-FZ100
Battery charger BC-QZ1
Accessory shoe cap
USB-A to USB-C cable (USB 3.2)