Home > Personal Technology > Digital Cameras > Sony A7R III: What You Need To Know

Sony’s introduction of the A7R III marks the third iteration of their industry-changing A7 series of full-frame mirrorless cameras. It features a new 42.4MP Exmor R sensor, 10 fps continuous shooting with full AF/AE tracking with mechanical shutter, 4K video capability, and 15-stops of dynamic range. Here are the essential specs you need to know about this fresh reboot of the poster child of the mirrorless camera world.

The Sony A7R III. Image: Sony

New Image Sensor

The A7R III features a new 42.4MP back-illuminated CMOS, giving it superior light sensitivity and low-noise. Its new BIONZ X processing engine is 80% faster than on the A7R II. These two works to provide fast shooting performance with a wide ISO range of 100-32000 (expandable to ISO 50-102400 for photos) and 15-stop dynamic range at lower ISO.

Keeping true to the A7R series, the A7R III sensor does not feature optical low pass filter. The sensor is equipped with a new 5-axis image stabilisation to give it a 5.5-step stabilisation. There is also a new low-vibration shutter to reduce shaking – especially useful when the slightest imperfections can be noticed when shooting at 42.4 MP.

The new BIONZ X image processor allows faster processing and unparalleled dynamic range in low-light conditions. Image: Sony

Autofocus, Continuous Shooting Speed

The A7R III is capable of shooting full 42.4MP images at a “Continuous: Hi+” mode at10 fps with AF/AE tracking for up to 76 JPEG/RAW or 28 uncompressed RAW images, while maintaining essential button operability. The high speed mode is available under both mechanical shutter or silent shooting.

For shooting under artificial lighting, anti-flicker function minimises flickering from light sources at high shutter speeds.

The new AF system features 399 phase-detection points, covering 68% of the image area in horizontal and vertical directions. There are also 425 contrast AF points. This AF promises 50% faster AF acquisition in low-light conditions and twice as accurate. The Eye AF feature is also twice as effective and available when using A-mount lenses that features SSM or SAM with adapter.

The ‘joystick’ AF point selector on the A9 has also been ported over, together with touch focus functionality.

Unparalled Video

Sony’s A7 series shook the camera world with its universal adoption of 4K video recording capabilities coupled with a raw log format. Not to be outdone by past iterations, the A7R III’s Super 35mm format oversamples video information at 5K and produces 4K footage with unparalleled detail.

A new Hybrid Log-Gamma (HLG) is available on camera to provide an instant HDR workflow, allowing compatible TVs to play back 4K HDR footage. Both S-Log2 and S-Log3 are available for better colour grading. The a7R III can also record Full HD at 120fps at 100Mbps.

Form and Function

The A7R III’s light weight at 657g does not compromise on functionality. It comes with dual media slots, with one supporting UHS-II SD cards. The battery life doubles that of the predecessor as the new Z-series battery has twice the capacity of the older W series battery used by A7R II. The electronic viewfinder on A7R III is similar to the one on A9 camera, allowing users to select between a framerate of 50fps or 100fps. The LCD has also been improved with 1.44M dots and WhiteMagic™ technology to provide better viewing under bright lighting.

The A7R III is well connected with flash sync terminal, Wi-Fi file transfer and a USB Type-C terminal for charging and data transfer.

Capture incredible detail in an incredibly compact form. Image: Sony

Medium Format? Forget it.

Providing a staggering 169.6MP of image data, the Pixel Shift Multi Shooting mode debuts on the A7R III. More ideal for art, still life and architectural photography, it utilises the 5-axis stabilisation to create super-high resolution composite image by moving the sensor 1-pixel in 4 directions to capture four separate images. Users can then edit and combine the images with the new Imaging Edge software suite that comes with the camera.

The A7R III will be available in selected Asia Pacific countries from November 2017.


Community Writer
Tommy Kan

Fascinated with airplane and technology since young, he rose to become his family’s #1 provider of (literal) in-house tech support and airline ticketing.

VR-Zone is a leading online technology news publication reporting on bleeding edge trends in PC and mobile gadgets, with in-depth reviews and commentaries.

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