Sony Alpha 9 II Mirrorless Camera
The Sony a9 II is a 24.2MP (effective), 28.3MP (total) full-frame mirrorless camera — with 4K video and in-body stabilization. Check GearFocus for current availability, with buyer protection on every purchase.
Sony Alpha 9 II Mirrorless Camera
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Camera Overview — Sony a9 II
Key Features — Sony a9 II
24.2MP Full-Frame Sensor: A 35mm full-frame stacked CMOS sensor delivers high image quality with strong dynamic range across a wide variety of shooting conditions.
20 fps Electronic Burst: Shoots at up to 20 fps with continuous AF/AE tracking via the electronic shutter, making it well-suited for fast-action and sports photography.
693-Point Phase-Detection AF: 693 phase-detection and 425 contrast-detection points cover the frame densely, supporting fast and accurate subject acquisition.
Real-Time Eye AF & Tracking: Fast Hybrid AF with Real-Time Eye AF and Real-Time Tracking keeps moving subjects — including people and animals — locked in focus continuously.
5-Axis In-Body Stabilization: Optical image stabilization built into the body compensates for camera shake across five axes without requiring a stabilized lens.
3,686,400-Dot OLED Viewfinder: A 0.5-inch OLED EVF with 120 Hz refresh rate provides a sharp, fluid view that aids in tracking fast-moving subjects.
Camera Specifications — Sony a9 II
| Spec | Detail |
|---|---|
| Use Cases | Sports, Wildlife, Studio |
| Type | Mirrorless |
| Sensor | Full Frame (35mm) |
| Resolution | 24.2MP (effective), 28.3MP (total) |
| Processor | BIONZ X |
| ISO Range | 100 – 204800 |
| AF System | Hybrid (Phase + Contrast), Eye Detection AF, Face Detection AF, AI-Based Subject Tracking |
| AF Points | 693 phase-detection, 425 contrast-detection |
| Max Photo Resolution | 24MP |
| Burst Rate | 20 fps (electronic), 10 fps (mechanical) fps |
| Max Video Resolution | 4K |
| Max Frame Rate | 120fps |
Description — Sony a9 II
The Sony Alpha 9 II is a full-frame mirrorless camera equipped with a 24.2MP effective (28.3MP total) full-frame 35mm sensor and BIONZ X image processor. Burst shooting reaches 20 fps electronically with continuous AF/AE tracking, or 10 fps mechanically, backed by an autofocus system spanning 693 phase-detection and 425 contrast-detection points with Real-Time Eye AF, Real-Time Tracking, and subject tracking. The ISO range extends from 100 to 204800.
In-body stabilization is handled by a 5-Axis system. Video performance includes 4K recording at 24p, 25p, 30p, and 60p, plus 120p in Full HD, captured in 8-bit with S-Log3 and HLG color profile support. Composing shots is aided by a 0.5-inch OLED electronic viewfinder at 3,686,400 dots and 120 Hz refresh, alongside a rear 3.0-inch tilting TFT LCD touchscreen at 1,440,000 dots.
The magnesium alloy, weather-sealed body weighs 678g and measures 128.9 x 96.4 x 77.5 mm. Dual UHS-I/II SD card slots, Wi-Fi, Bluetooth, USB-C, HDMI, headphone and microphone jacks, and the Sony E lens mount round out the feature set. Battery life is rated at 690 shots using the NP-FZ100.
Pros — Sony a9 II
- ✓20 fps electronic burst with continuous AF/AE tracking (photoSpecs.maxBurstFrameRate)
- ✓Dense autofocus coverage with 693 phase-detection and 425 contrast-detection points (autofocus.focusPoints)
- ✓High-resolution 3,686,400-dot OLED viewfinder running at 120 Hz refresh rate (viewfinder.resolution, viewfinder.refreshRate)
Cons — Sony a9 II
- ✗Video limited to 8-bit output (videoSpecs.bitDepth)
- ✗No built-in flash; requires external unit via Multi-Interface Shoe (flashSystem)
- ✗Maximum effective resolution of 24.2MP may not satisfy high-resolution imaging needs (sensor.resolution)
Reviews — Sony a9 II
Videos — Sony a9 II
The NEW SONY A9II- 12 things you NEED to know! — Manny Ortiz