Sony a1 II
Sony · Mirrorless · 50.1 MP · Full Frame · 8K video

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General | |
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About This CameraSony launched the a1 II in 2024 as a full-frame mirrorless camera built around a 50.1MP sensor. That resolution suits photographers who print large or crop heavily, while 8K video makes the body appealing to hybrid shooters who film as well as shoot stills. This is not a lightweight body. At 743g before any lens is fitted, it will feel substantial in a bag and during long handheld sessions. An electronic viewfinder and built-in WiFi round out the core equipment. The viewfinder's electronic display shows the sensor's image before each frame, and the built-in WiFi adds wireless connectivity to the body's standard specification. | |
| Brand | Sony |
Announcement date ⓘRefers to the date the manufacturer publicly announced the upcoming release and general specs of this camera. | Nov 2024 |
Released ⓘRefers to the year this camera was officially made available for sale. | 2024 |
| Camera weight | 743 g |
| Camera type | |
Sensor | |
| Type | Full-frame Exmor RS CMOS stacked |
| Dynamic Range | 15 stops |
Autofocus | |
| System | Hybrid AF (phase-detection/contrast-detection) |
| AF Points (stills) | 759 phase-detection points |
| AF Coverage | ~92% of sensor area |
| Low Light AF | -4 EV at f/2 |
| Subject Recognition | Human, Animal, Bird, Insect, Car, Train, Airplane |
| Eye AF Performance | 30% faster human eye, 50% faster animal eye vs original A1 |
| AI Processing | Dedicated AI Processing Unit |
Continuous shooting | |
| Max Frame Rate | 30 fps (electronic shutter) |
| Mechanical Shutter | 10 fps |
| AF/AE Calculations | 120 per second |
| Raw Format | Lossless compressed up to 20 fps, lossy compressed at 30 fps |
Video | |
About the VideoThe headline video mode is 8K at 30 frames per second with 10-bit 4:2:0 colour. Footage is oversampled from an 8.6K full-frame readout, or from 5.8K when you shoot in Super 35, which helps the maximum resolution hold fine detail. For slow motion, 4K runs at up to 120p with 10-bit 4:2:2 sampling. Slowed in the edit, fast action plays out smoothly, and the richer colour sampling gives grading more to work with than the 8K mode offers. Handheld shooting gets three stabilisation tools: Dynamic Active Mode, Framing Stabilizer and Breathing Compensation. They reduce camera shake rather than subject movement, and Breathing Compensation counters the framing shift that appears as focus changes. For productions that want more from the files, ProRes RAW output is available over HDMI to an external recorder. | |
| 8K Recording | 8K 30p with 10-bit 4:2:0 |
| 4K Recording | 4K 120p with 10-bit 4:2:2 |
| 8K Oversampling | 8.6K full-frame, 5.8K Super 35 |
| Stabilization Modes | Dynamic Active Mode, Framing Stabilizer, Breathing Compensation |
| ProRes RAW | Via HDMI |
Max video resolution ⓘThe best resolution this camera can capture video in. Modern cameras can capture up to 8K video. | |
Image stabilization | |
| Type | In-body (IBIS) |
| Compensation | 8.5 stops at center, 7 stops at edges |
Viewfinder | |
| Magnification | 0.9x |
| Resolution | 9.44M dots (2048 x 1536p) |
| Refresh Rate | 60Hz (standard), 120Hz (high), 240Hz (higher) |
Display | |
| Size | 3.2-inch |
| Resolution | 2,095,104 dots (touchscreen) |
| Articulation | 4-axis (tilt, flip, rotate) |
ISO range | |
| Stills | 100-32000 (expandable 50-102400) |
| Video | 100-32000 (expandable 100-12800) |
Memory cards | |
| Slot 1 | CFexpress Type A |
| Slot 2 | SD/SDHC/SDXC (UHS-II) |
Connectivity | |
| USB | USB-C |
| Network | 2.5GBASE-T LAN (Ethernet) |
Physical | |
| Dimensions | 136.1 x 96.9 x 82.9 mm |
Features | |
About the FeaturesSpeed Boost is placed on a programmable front button labelled C5, so the control sits under a finger while your eye stays at the viewfinder. A front button this close to the natural grip keeps the function reachable during fast handheld work. WiFi is built in, so the body carries wireless connectivity as standard. The connection sits alongside the programmable C5 button among the camera's built-in equipment. For fast action, Pre-Capture records frames from 0.03 to 1.0 seconds before the moment you fully press the shutter. When a decisive instant happens a fraction early, the camera has already caught it, which is useful for strikes, take-offs and other fleeting moments. | |
| Pre Capture | 0.03 to 1.0 seconds |
| Speed Boost | Programmable front button (C5) |
| Pose Estimation | Tracks body/head position for accurate focus |
Wi-Fi ⓘBuilt-in Wi-Fi allows you to connect your camera and share images wirelessly. | |
Processor | |
| Image Engine | BIONZ XR |
Optics | |
About the OpticsThe 50.1MP full-frame sensor gives plenty of room for cropping and large prints. You can frame loosely for fast action and still trim the file afterwards, which matters when wildlife or sport fills the frame unpredictably, and a generous pixel count leaves detail intact after a tight crop. Framing happens through an electronic viewfinder rather than an optical one. That means the viewfinder shows exposure as the sensor sees it, so brightness or colour mistakes show up before the shutter fires instead of afterwards. Focus gets help from Pose Estimation, which tracks body and head position to keep focus accurate as people move. That makes photographing dancers, athletes or children less of a guessing game, because the camera keeps working on the person rather than whatever happens to sit under the active point. | |
Sensor format ⓘRefers to the most commonly used sensor sizes. | |
Megapixels ⓘThe higher the number of megapixels, the more detail the cameras sensor can capture. | 50.1 MP050 |
Viewfinder type ⓘThe viewfinder type is either electronic or optical. Electronic viewfinders will have a small screen in the viewfinder. Optical viewfinders will use prisms and mirrors to look through the lens. | Electronic |