As a professional photographer for 40 years I depend on my equipment to perform, switching from a Nikon D850 to the A7RIII was a big move! After just 1 week I'm already impressed and racing ahead with the features.

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.

I was at the polo race in Werribee and found the autofocus was very fast and accurate. The joystick is delightful to use. The eye AF is fantastic. The 42 MP sensor Is excellent!

After finishing the Sony a9 review, I stated "As I go back to my Sony a7R II to continue work on the Sony lens reviews , I'm left feeling in want." I was still happy with the s7R II's resolution and dynamic range, but I definitely wanted some of the a9's new and improved features.

Lens Mount: Sony E-MountCamera Format: Full-FramePixels: Actual: 43.6 Megapixel, Effective: 42.4 MegapixelMax Resolution: 7952 x 5304Aspect Ratio: 3:2, 16:9Sensor Type / Size: CMOS, 35.9 x 24 mmFile Formats: Still Images: JPEG, RAW; Movies: AVCHD Ver.

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

I opted for the a7Riii over the a7iii after evaluating both-mainly for the 42mp sensor. The grip could be bigger with more space for fingers. I also bought the battery grip which resolves that issue. I bought three Sony lenses at the same time and will comment on those as I gain more experience.

I upgraded from the A7Rii and wasn't sure it would be worth it at first. I'm really glad I did!!! First, the auto focus on this camera is so fast. Finally there is a high quality full frame mirrorless camera that can focus like a top end DSLR. Second, they improved the battery!!!

The Sony Alpha A7R III is easily one of the best cameras you can buy at the moment. I think we are slowly coming to a point where professional cameras don't need to be traditional full frame DSLRs. The time of the mirrorless camera has truly come and the Sony Alpha A7R III is the proof.

Although it has the same pixel count as the A7R II, the A7R III makes some significant improvements upon its predecessor. The handling is much improved by the addition of the Multi-Selector (mini-joystick) for setting the AF point.

High-quality full-frame 42Mp sensor; 10fps continuous shooting; Silent shutter possible at 10fps

Limited use made of the touch-screen; Complex menu that could still be better arranged; Only one SD slot is UHS-II compliant