Sony a7S III vs Sony Alpha a9 II
Compare key differences and full specifications to find the camera that suits your photography.
Key differences
- Year: Sony a7S III: 2020 ; Sony Alpha a9 II: 2019
- Weight: Sony a7S III: 614 g ; Sony Alpha a9 II: 678 g
- Sensor resolution: Sony a7S III: 4260 x 2840 ; Sony Alpha a9 II: 6026 x 4017
- Effective megapixels: Sony a7S III: 12.1 ; Sony Alpha a9 II: 24.2
- Max. video mode: Sony a7S III: 4K 120p (3840 x 2160) ; Sony Alpha a9 II: 3840x2160 (30p/25p/24p)
Best for
Larger prints and more cropping detail: Sony Alpha a9 II (24.2).
| Specification | Sony a7S III | Sony Alpha a9 II |
|---|---|---|
| General | ||
| Brand | Sony | Sony |
| Model | a7S III | Alpha a9 II |
| Year | 2020 | 2019 |
| Body | ||
| Dimensions | 128.9 x 96.9 x 69.7 mm | 128.9 x 96.4 x 77.5 mm |
| Weight | 614 g | 678 g |
| Sensor | ||
| Sensor type | CMOS | CMOS |
| Sensor size | 35.6 x 23.8 mm | 35.6 x 23.8 mm |
| Sensor resolution | 4260 x 2840 | 6026 x 4017 |
| Crop factor | 1.01 | 1.01 |
| Total megapixels | 12.9 | 28.3 |
| Effective megapixels | 12.1 | 24.2 |
| Image | ||
| Max. image resolution | 4240 x 2832 | 6000 x 4000 |
| ISO | Auto, 80-102400 (extends to 40-409600) | Auto, 100-51200 (expandable to 50-204800) |
| Exposure & Shutter | ||
| Min. shutter speed | 30 sec | 30 sec |
| Max. shutter speed | 1/8000 sec | 1/32000 sec |
| Metering | Multi, Center-weighted, Spot | Multi, Center-weighted, Highlight-weighted, Average, Spot |
| Exposure compensation | ±5 EV (in 1/3 EV, 1/2 EV steps) | ±5 EV (in 1/3 EV, 1/2 EV steps) |
| Aperture priority | Yes | Yes |
| Shutter priority | Yes | Yes |
| White balance presets | 10.0 | 9.0 |
| Autofocus & Drive | ||
| Autofocus type | Fast Hybrid AF (phase + contrast detection) | — |
| AF phase-detection points | 759 | — |
| Max burst (mechanical shutter) | 10 fps | — |
| Stabilization | ||
| In-body stabilization (IBIS) | Yes, 5-axis sensor shift | — |
| Rated stops | 5.5 stops | — |
| Video | ||
| Max. video mode | 4K 120p (3840 x 2160) | 3840x2160 (30p/25p/24p) |
| Display & Viewfinder | ||
| Screen size | 3" | 3" |
| Screen resolution | 1,440,000 dots | 1,440,000 dots |
| Viewfinder | Electronic | Electronic |
| Storage & Connectivity | ||
| Storage types | SD/SDHC/SDXC/MS Pro Duo/CFexpress | SD/SDHC/SDXC |
| USB | USB 3.0 (5 GBit/sec) | USB 3.0 (5 GBit/sec) |
| Power | ||
| Battery | NP-FZ100 lithium-ion battery | NP-FZ100 lithium-ion battery |
| CIPA rated shots (EVF) | 510 shots | — |
| CIPA rated shots (LCD) | 600 shots | — |
| Lens & Focus | ||
| Digital zoom | Yes | Yes |