Demonstrating the harmonious integration of speed, resolution, and video functionalities, the Sony a7R IIIA Mirrorless Camera stands out as a flexible and top-notch camera. It is known for its exceptional resolution as well as its ability to handle a wide range of multimedia tasks with remarkable efficiency.

The Sony a7R IIIA boasts a back-illuminated design, featuring a full-frame 42.4-megapixel Exmor R CMOS sensor and BIONZ X image processor. This powerful combination delivers high-resolution images and videos while effectively reducing noise and enhancing speed. The sensor incorporates a gapless on-chip lens design, an anti-reflection coating, and does away with the optical low-pass filter, resulting in improved light capture and heightened detail. Additionally, the copper wiring layer significantly enhances data transmission speed, enabling the creation of 14-bit, high-resolution 42.4-megapixel stills with a native ISO sensitivity range of 100-32000, expandable to ISO 50-102400. Moreover, it facilitates internal UHD 4K video recording with an extended dynamic range, utilizing the full width of the full-frame sensor.

The BIONZ X processor, working in tandem with a high-speed front-end LSI, ensures faster processing times and an impressive 15-stop dynamic range at low sensitivity settings. This combination also allows for swift continuous shooting at up to 10 fps at the full resolution, capturing up to 76 consecutive frames with continuous AF/AE when using either a mechanical or electronic shutter. In live view mode, a continuous shooting rate of up to 8 fps is also achievable.

Lock-on AF ensures continuous focus on moving subjects by utilizing a configurable frame that targets the moving subject of choice. Expand Flexible Spot leverages adjacent focus points to maintain focus on moving subjects, even if the initial focus point becomes unfocused. Eye AF focuses on the eyes of human subjects for portraits and is functional in both AF-S and AF-C modes, applicable to stills and videos. This feature is also available for photographing animals in any focus mode for still images. The Focus Magnifier tool aids in achieving precise focus on small subject details.

The camera's rear touchscreen supports Touch Focus control, while Touchpad Focus Control allows for intuitive focus adjustments using the rear screen, even when viewing through the viewfinder. Customizable AF area orientation enhances focus control, adapting to vertical or horizontal shooting positions to align with your subject. AF tracking sensitivity is adjustable in five steps to accommodate the movement of your subject. For efficiency, favorite focus point settings can be saved and quickly accessed with a custom button, streamlining the transition between different focus configurations.

The upgraded 4D FOCUS system incorporates a blend of 399 phase-detection points, covering around 68% of the frame, and 425 contrast-detection areas. This advanced Fast Hybrid AF System ensures speedy and accurate autofocus along with efficient subject tracking. Compared to earlier a7R models, this system achieves double the focusing speed and more dependable tracking. Additionally, it delivers enhanced low-light focusing response down to -3 EV.

Embedded within the durable a7 III is an effective 5-axis SteadyShot INSIDE stabilization system, which provides up to 5 stops of stabilization to counteract five distinct types of camera movement that can occur during handheld shooting of both stills and videos. This feature empowers users to confidently utilize any lens, including adapted ones, for critical photography and videography without the worry of blur caused by camera movement.

The stabilization system is particularly adept at correcting pitch and yaw movements for shots taken with long focal lengths. For macro and high-magnification photography, the system offers compensation for horizontal and vertical shifts. Additionally, roll compensation is beneficial across all types of shooting. Remarkably, all five axes of stabilization are active at all times, regardless of whether the lens used is a third-party lens with an adapter, or a lens that already includes optical stabilization.

The camera supports internal UHD 4K video recording at various frame rates up to 30 fps, utilizing the entire sensor width and offering 8-bit 4:2:0 color sampling with the 100Mbps XAVC S codec. Additionally, it allows for oversampled 4K recording, leveraging a 5K capture area with a Super 35mm crop to enhance detail. This method ensures a full pixel readout without pixel binning, resulting in superior image quality with minimal moiré and aliasing effects.

Full HD 1080p video can be recorded at frame rates up to 120 fps. The capability for high-speed, 120 fps recording further enables 4x and 5x Slow & Quick Motion (S&Q) movie recording, with selectable frame rates of 30p or 24p.

Beyond the high-resolution internal recording capabilities, the camera offers uncompressed HDMI output, allowing for the attachment of an optional external recorder. This setup facilitates pristine 4K recording with 4:2:2 color sampling.

Furthermore, the 4K video recording feature provides the option to extract 8MP still images during playback by capturing a single frame from a video and saving it as an independent file.

• Constructed with a magnesium alloy chassis, the camera ensures robustness, longevity, and steadiness, all the while maintaining a light weight. Enhancements have been made to the lens mount to offer better support for heavier lenses, and improvements in grip rigidity make for a more comfortable shooting experience.
• The camera now includes a USB 3.2 Gen 1 Type-C port alongside a micro-USB port, offering enhanced and more dependable tethering capabilities. The Type-C connection also enables the camera to be charged directly from a connected power source.
• Weather-sealing has been employed to resist dust and moisture for reliable operation in harsh weather conditions.
• Using the same NP-FZ100 battery as the a9, the a7R IIIA has improved battery life and is now rated for approximately 530 shots per charge with the EVF or 640 shots with the rear LCD.

• Integrated PC sync terminal for wired flash sync with strobe packs or wireless radio remotes.
• The a7R IIIA comes with integrated Wi-Fi, allowing for the seamless transfer of images to mobile devices for immediate online sharing through social media, email, or cloud storage. It also features NFC (Near Field Communication) capability, enabling straightforward one-touch pairing with compatible mobile devices without the need for intricate setup procedures. Upon establishing a connection, the connected mobile device can display a live view from the camera and remotely operate its shutter, enhancing the flexibility and control for the user.
• A USB 3.2 Gen 1 Type-C port has been added, in addition to a micro-USB port, for faster, more reliable tethering support. The USB Type-C connection allows the camera to be charged from the host power source while connected.
• Bluetooth connectivity allows for location data acquisition.

Limited 1-year warranty.