Sony a7R II versus a7 II: Eight key differences. Sony's a7-series marked the debut of full-frame mirrorless, and Sony still dominates this market with its a7S II, a7 II and a7R II. Short Video Recap. If you want to find out the most important differences in less than a minute, check out the video below. 1. Sensor. Although the resolution remains roughly the same (24.3MP vs. 24.2MP), the A7 III features a newly developed Exmor R CMOS sensor with BSI (Back-Illuminated) technology. The Sony α7 III offers some improvements over the Sony α7 II, including a newer backside-illuminated sensor that performs a little better in low light and a much-improved autofocus system and video features like 4k recording. Sony a7 III. move left: move right: move left: move right $998.00 - $1,398.00. $1,498.00. 82% Silver Award. Read review Mar 31, 2015 89% Gold Award. Read review Apr 23, 2018 Nov 20, 2014 Autofocus system. The A7 III has 693 phase detection AF points covering 93% of the imaging area. This means that subjects can be followed across almost the entire frame. According to Sony, the faster readout speed of the A7 III's sensor helps give it faster focusing in low light than the Mark II. Sony claims it's around 2x faster. Sony a7ii vs Sony a7iii | Key Differences. 1. Size & Weight ; 2. Sensor Comparison; 3. ISO Levels and picture quality ; 4. Shutter modes and Continuous Shooting; 5. Autofocus; 6. Rear LCD & EVF ; 7. Video Recording; 8. Battery Power; 9. Value & Final Opinion | Sony a7ii vs Sony a7iii nCm3.

difference between sony a7 and a7ii