The Sony Alpha a7 II is an image-stabilized full frame mirrorless camera, the fourth release in Sony's a7 lineup and the follow up the original a7. It uses the same 24-megapixel sensor as its predecessor, and the same Bionz X processor as the rest of the a7 series. Improvements come in the form of 5-axis sensor-based image stabilization, improved AF performance and some overall design tweaks. The controls are laid out in similar fashion to the a7, though the grip, command dials and shutter have been completely redesigned.
The body of the a7 II is physically larger, and about 25% heavier than the original a7-series cameras. It is also now comprised entirely of magnesium alloy like the a7S; the original a7 and a7R featured a frontplate made out of a composite material.
The A7 II uses the same hybrid AF system as the A7 with 117 phase-detect and 25 contrast points. Sony claims AF has been improved about 30% over its predecessor thanks to algorithm tweaks, and tracking has been improved 1.5x.
5-axis image stabilization
The α7 II dramatically expands your range of expression by compensating for five types of camera shake during handheld shooting of still images and movies. The highly effective 4.5-step2 compensation lets you confidently zoom in faraway subjects, snap detailed close-ups, capture night scenes and more — all with minimal camera shake blur.
Compatibility with wide-ranging mountable lenses
New 5-axis image stabilization lets you enjoy unparalleled handheld shooting freedom with more of your favorite mountable lenses. The short flange-back distance in the E-mount α7 II contributes to broad lens compatibility.
Automatic optimization for every α lens
Confidently use your favorite E-mount and A-mount lenses, knowing the α7 II will analyze information from the lens to optimize depiction performance and 5-axis image stabilization for the particular lens you mount. When using E-mount lenses with optical stabilization (OSS), the α7 II combines the best of in-lens and in-camera image stabilization.
Focal plane phase-detection AF with A-mount lenses
The α7 II offers focal plane phase-detection AF even when an A-mountlens is mounted5 via LAEA3(LA-EA16) mount adaptor. So you can take advantage of the wide AFcoverage , high-speed response, high tracking capability and high optical performance of Amount lenses.
High-performance Fast Hybrid AF
The newly enhanced Fast Hybrid AF system delivers extremely high-speed response, highly accurate prediction and wide area coverage for autofocusing and tracking you can always depend on. It’s remarkably fast for a full-frame camera AF system (30% faster than the α7) and accurately predicts subject movement so you can steadfastly track your subject.
Lock-on AF tracking
It’s easy to keep moving subjects in focus with enhanced Lock-on AF, which analyzes even more information from the scene to ensure usage of the optimal AF point for smooth, stable autofocusing. Its ability to detect and track moving subjects has now been significantly improved, thanks to Sony’s advanced proprietary image analysis technology.