Sony's Alpha A7r Mark III is a full-frame mirrorless camera with 42.4 Megapixels, 4k HDR video and 10fps burst shooting. It keeps the sensor of the Mark II but improves the dynamic range, upgrades the AF speed, adds twin SD slots, an AF joystick, PC Sync port, and the Quad VGA viewfinder and...

Editors' note: Updated Oct. 27, 2017, with some verdicts and photo samples based on a few hours shooting with the A7R III.

With a better autofocus system, Sony's follow up to its A7R II flagship full-frame mirrorless keeps the stellar photo and video quality but makes it easier to get.

With big improvements to battery life and performance, Sony's A7R Mark III is a worthy successor.

42.4MP full-frame sensor; 10 FPS burst shooting; Vastly improved battery life; Improved image stabilization; Improved AF performance

No "anti-distortion shutter" rating; Burst mode limits compressed RAWs to 12-bit

At its core, the a7R III can be seen as a mashup of the best parts of its predecessor, the a7R II, and Sony's sports-shooting flagship a9. As with Nikon's D850 for DSLR users, the a7R III has the potential to be a 'Goldilocks' camera for those looking at mirrorless solutions.

When Sony unveiled its top-tier flagship full-frame A9 , we wondered when the camera's top-tier features would trickle down to lower-priced models. Surprisingly enough Sony didn't take long to announce the A7R III, which had many of the same features that made the A9 great in a slightly cheaper...

The a7R III doesn't offer increased resolution when compared with its predecessor, but that doesn't mean it's not a serious upgrade. It takes a sensor that's already proven to deliver excellent performance and ekes a bit more dyanmic range out of it, while other upgrades are more palpable.

Proven 42MP full-frame sensor; Improved processor and autofocus system; 10fps image capture with tracking; Silent shooting option; Tilting touch LCD; Dual card slots; Larger battery than a7R II

Only one card slot supports UHS-II speeds; No built-in flash; No in-camera time-lapse support; Can't start video until image buffer is cleared; Dense menu system

. I bought mine from Adorama at an Editorial Discount which I must ethically declare. But if you want to support this site, then consider purchasing one using

The Sony Alpha 7R III is Sony's latest high-resolution, full-frame mirrorless camera. It offers impressive all-round specifications, with a 42.4MP sensor, 10fps continuous shooting, a hybrid AF system that employs 399 phase-detection points covering approximately 68% of the frame, and 4K video...

Phenomenal image quality in almost any situation; Extremely fast and responsive; Compact; lightweight design with well-placed controls; Superb electronic viewfinder; In-body image stabilisation gives sharper images with any lens

AF area is invisible when moved using the joystick; Rear screen only tilts up or down; Handgrip too close to the lens for shooting with gloves

I'm reviewing the a7R III from the perspective of a bird and wildlife shooter. I do lots of shooting of moving animals at predawn and after sunset, so dynamic range is a huge plus. Since I'm shooting feathers and fur, resolution is a high priority.

The A7R III is so good, so powerful and so versatile. Its troubling body-lens size mismatch, and 530/650-shot battery life, which is good for mirrorless but poor next to a pro DSLR, means it just loses half a star from an otherwise perfect score.

Superb resolution; 10fps continuous shooting; 4K video options

Body/lens size mismatch; Pro lenses are expensive; Battery life still not at DSLR level