Sony Alpha a9
| Brand | Sony 2017 |
| Model | ILCE9/B |
| Released Year | 2017 |
| Type | Mirrorless Cameras |
| Series | A9 |
| Color | Black |
| Compatible Mountings | Sony E |
| Autofocus | Yes |
| Photo Sensor Resolution | 24.2 MP |
| Video Resolution | <ul><li>4K UHD 2160p</li><li>2160p</li></ul> |
| Optical Zoom | 1 x |
| File Format | <ul><li>JPEG, Raw</li><li>RAW</li></ul> |
| Status | Active |
Overview
The Sony Alpha a9 (ILCE9/B) is a professional mirrorless camera launched in 2017, featuring a 24.2MP full-frame stacked CMOS sensor designed to deliver high-speed readout and exceptional image quality. The camera supports up to 20 frames per second continuous shooting with full AF/AE tracking, enabled by its advanced BIONZ X image processor and front-end LSI. It includes a 693-point phase-detection autofocus system that covers approximately 93% of the image area for superior subject tracking. The ILCE9/B supports UHD 4K video recording, slow-motion capture of up to 120fps, and has a low blackout viewfinder providing a more seamless shooting experience. Connectivity options include Wi-Fi, NFC, and a robust magnesium alloy body construction for durability. This model marked a significant advancement in mirrorless technology aimed at professional photographers and sports shooters.
Specifications
| Age Range Description | Adult |
| Built-In Media |
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| Are Batteries Included |
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| Remote Included | No |
| Series Number | 9 |
| UPC |
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| Item Height |
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| Manufacturer |
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| Warranty Description |
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| Connectivity Technology |
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| Wireless Technology |
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| Video Output |
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| Total USB 2.0 Ports | 1 |
| Total USB 3.0 Ports | 1 |
| Total USB Ports | 2 |
| Total Video Out Ports | 1 |
| Shooting Modes |
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| Digital-Still |
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| Movie Mode | Yes |
| Image Capture Type |
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| Night vision | No |
| Auto Focus Technology |
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| Focus Features |
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| Autofocus Points | 693 |
| Focus Type | Auto Focus |
| Focus Mode |
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| Autofocus | Yes |
| Aspect Ratio |
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| File Format |
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| Effective Still Resolution | 24.2 MP |
| JPEG Quality Level |
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| Supported Image Format |
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| Maximum Image Size | 24 MP |
| Bit Depth | 14 Bit |
| Total Still Resolution |
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| Optical Zoom | 1 x |
| Lens Type |
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| Zoom |
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| Camera Lens |
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| Real Angle Of View |
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| Digital Zoom | 4 x |
| Lens Construction |
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| Metering Methods |
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| Exposure Control |
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| White Balance Settings | Auto |
| Self Timer | 2 seconds, 10 seconds, 5 seconds |
| Screen Size | 3 Inches |
| Display Type |
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| Dots Per Screen |
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| Display Fixture Type | Tilting |
| Touch Screen Type | Capacitive |
| Display Resolution Maximum |
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| Has Color Screen |
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| Flash Memory Type |
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| Memory Slots Available | 2 |
| Recording Capacity | 105 minutes |
| Write Speed |
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| Flash Memory Speed Class |
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| Flash Memory UHS Speed Class |
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| Flash Memory Video Speed Class |
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| Compatible Mountings | Sony E |
| Sensor Type | CMOS |
| Image stabilization | Sensor-shift |
| Maximum Aperture | 2.8 Millimeters |
| Expanded ISO Minimum | 50 |
| Photo Sensor Resolution | 24.2 MP |
| Photo Sensor Size | Full Frame (35mm) |
| Maximum Shutter Speed | 3.125e-05 seconds |
| Minimum Shutter Speed |
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| Form Factor | Mirrorless |
| Special Feature |
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| Color | Black |
| Item Weight |
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| Video Resolution |
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| Viewfinder | Electronic |
| Flash Modes |
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| Camera Flash |
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| Skill Level | Professional |
| Compatible Devices | Devices with NFC, HDMI, Bluetooth, and USB connectivity; SD/SDHC/SDXC (UHS-II) and Memory Stick Duo Hybrid (UHS-I) memory cards |
| Continuous Shooting | 20 fps |
| Aperture modes | F2.8 |
| Viewfinder Magnification | 0.78x |
| Flash Sync Speed | 1/250 Second |
| Battery Weight | 85 Grams |
| Delay between shots | 0.05 seconds |
| Audio Output Type |
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| Battery Cell Type | Lithium Ion |
| Battery Type | Lithium Ion |
| Water Resistance Level |
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| Frame Rate |
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| External-Memory Size | 64 GB |
| Memory Storage Capacity | 64 GB |
| Flash Memory Bus Interface Type | SD or SDHC |
| Maximum Focal Length | 70 Millimeters |
| Minimum Focal Length | 24 Millimeters |
| Focal Length Description | 70 millimeters |
| Number of Diaphragm Blades | 9 |
| Digital Scene Transition | |
| Specific Uses For Product | Photography, Videography |
| Video Capture Format | 4k |
| Expanded ISO Maximum | 204800 |
| Processor Description | bionz x |
| Mount Type | Bayonet |
| Minimum Aperture | 2.8 |
| Warranty Type | 90 days limited warranty |
| Shutter Type | Electronic |
| Crop Factor | 1 |
Images
FAQ
What sensor does the Sony Alpha a9 use?
The Sony Alpha a9 uses a 24.2MP full-frame stacked CMOS sensor, which allows for high-speed data readout and enhanced image quality.
Does the Sony Alpha a9 support video recording?
Yes, it supports UHD 4K video recording at 30p and slow-motion video up to 120fps in Full HD resolution.
What is the continuous shooting speed of the Sony Alpha a9?
The camera can shoot continuously at up to 20 frames per second with full autofocus and auto-exposure tracking.
Is the Sony Alpha a9 still in production?
No, the Sony Alpha a9 has not been officially discontinued yet but newer models have since been released.
What is the autofocus system on the Sony Alpha a9?
It features a 693-point phase-detection autofocus system that covers approximately 93% of the image area for fast and accurate focusing.
Does the Sony Alpha a9 have built-in Wi-Fi?
Yes, it includes built-in Wi-Fi and NFC for easy image sharing and remote control.
What type of viewfinder does the Sony Alpha a9 offer?
The camera is equipped with a high-resolution electronic viewfinder with very low blackout time, enhancing the live view experience.
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