Sony a7 II vs Sony a9 Specifications Comparison
| Camera Feature | Sony a7 II | Sony a9 |
|---|---|---|
| Announced | November 2014 | April 2017 |
| Camera Type | Mirrorless | Mirrorless |
| Sensor Type | CMOS | Stacked CMOS |
| Image Processor | BIONZ X | BIONZ X |
| Resolution | 24.3 MP | 24.2 MP |
| Pixel Dimensions | 6000×4000 | 6000×4000 |
| Sensor Dimensions | 35.8 x 23.9 mm (Full Frame) | 35.6 x 23.8 mm (Full Frame) |
| Sensor Pixel Size | 5.96µ | 5.93µ |
| Low Pass Filter | Yes | Yes |
| IBIS (In-Body Image Stabilization) | Yes | Yes |
| Base ISO | ISO 100 | ISO 100 |
| Max Native ISO | ISO 6400 | ISO 51,200 |
| Extended ISOs | ISO 50-25,600 | ISO 50-204,800 |
| High-Resolution Sensor Shift | No | No |
| Focus Stack Bracketing | No | No |
| Pre-Shoot Burst Mode | No | No |
| Fastest Shutter Speed | 1/8000 | 1/32000 |
| Longest Shutter Speed | 30 seconds | 30 seconds |
| Continuous Shooting (Mechanical Shutter) | 5 FPS | 5 FPS |
| Continuous Shooting (Electronic Shutter) | No electronic shutter | 20 FPS |
| Notes for High FPS Shooting | 12-bit raw in continuous drive mode (14-bit in single-shot mode) | Compressed 12-bit raw at 20 FPS (uncompressed 12-bit raw is available at 12 FPS) |
| Buffer Size (Raw) | 28 frames (5 FPS) | 241 frames (20 FPS) |
| Autofocus System | Hybrid PDAF | Hybrid PDAF |
| Autofocus Points | 117 | 693 |
| Maximum Low-Light AF Sensitivity (Standardized to f/2, ISO 100) | -1 EV | -3 EV |
| Standard Flash Sync Speed | 1/250 | 1/250 |
| Curtain to Protect Sensor at Shutdown | No | No |
Video Features | ||
| Maximum Video Bit Depth (Internal) | 8 bits | 8 bits |
| Maximum Video Bit Depth (External) | 8 bits | 8 bits |
| Raw Video | No | No |
| 4K Maximum Framerate | N/A | 30 FPS |
| 1080P Maximum Framerate | 60 FPS | 120 FPS |
| Additional Video Crop Factor | No | 1.2x crop at 4K 30p (4K 24/25p has no additional crop) |
| Chroma Subsampling | 4:2:0, 4:2:2 (External) | 4:2:0, 4:2:2 (External) |
| Video Recording Limit | 30 min | 30 min |
Physical and Other Features | ||
| Card Slots | 1 | 2 |
| Slot 1 Type | SD (UHS-I) | SD (UHS-II) |
| Slot 2 Type | N/A | SD (UHS-I) |
| Rear LCD Size (Diagonal) | 3.0 in | 3.0 in |
| Rear LCD Resolution | 1.23 million dots | 1.44 million dots |
| Articulating LCD | Single Axis | Single Axis |
| Touchscreen | No | Yes |
| Viewfinder | EVF | EVF |
| Viewfinder Magnification | 0.71x | 0.78x |
| Viewfinder Resolution | 2.36 million dots | 3.69 million dots |
| Viewfinder Coverage | 100% | 100% |
| Voice Memo | No | No |
| Headphone Jack | Yes | Yes |
| Microphone Jack | Yes | Yes |
| Built-in Flash | No | No |
| GPS | No | No |
| Bluetooth | No | Yes |
| WiFi | Yes | Yes |
| USB Type | Type B 2.0 | Type B 2.0 |
| Battery Type | NP-FW50 | NP-FZ100 |
| Battery Life (Viewfinder) | 270 frames | 480 frames |
| Battery Life (Rear LCD) | 350 frames | 650 frames |
| Weather Sealed | Yes | Yes |
| Weight (Body Only w/ Battery + Card) | 599 g (1.32 lbs.) | 588 g (1.30 lbs.) |
| Dimensions (LxHxD) | 127 x 96 x 70 mm (5.0 x 3.8 x 2.8″)1 | 127 x 96 x 73 mm (5.0 x 3.8 x 2.9″)2 |
Price Comparison | ||
| MSRP, Body Only | $1700 (Discontinued) | $4500 (Discontinued) |
| Used Prices (Affiliate) | Sony a7 II Used Prices | Sony a9 Used Prices |
| 1The Sony a7 II’s official dimensions do not include the depth of the protruding viewfinder. To match typical standards today, 10mm were added to the a7 II’s depth measurement in this table. | ||
| 2The Sony a9’s official dimensions do not include the depth of the protruding viewfinder. To match typical standards today, 10mm were added to the a9’s depth measurement in this table. | ||
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