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Sony α7S III vs Sony α9 III
The Sony α9 III is 7.2 mm wider and 2.1 mm deeper than the Sony α7S III. The Sony α7S III takes up 8 % less space (the box around the body, without lens).
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Sony α7S III

- Width × height × depth
- 128.9 × 96.9 × 80.8 mm (5.07 × 3.81 × 3.18 in)
- Weight
- 699 g (24.7 oz)
- Mount
- Sony E
- Price
- $3,698 at Adorama
Sony α9 III

- Width × height × depth
- 136.1 × 96.9 × 82.9 mm (5.36 × 3.81 × 3.26 in)
- Weight
- 702 g (24.8 oz)
- Mount
- Sony E
- Price
- $6,398 at Adorama
Specifications compared
| α7S III | α9 III | |
|---|---|---|
| Sensor | Full-Frame | Full-Frame (global shutter) |
| Resolution | 12.1 MP | 24.6 MP |
| Stabilization | Sensor-shift | Sensor-shift |
| ISO | 80–102,400 (ext. 40–409,600) | 250–25,600 (ext. 125–51,200) |
| Shutter speed | 1/8000–30 s | 1/80000–30 s electronic (global) |
| Burst | Up to 10 fps | Up to 120 fps |
| Video | UHD 4K up to 120 fps | UHD 4K up to 120 fps |
| Autofocus | 759 phase-detection points | 759 phase-detection points |
| Viewfinder | 9.44M-dot OLED · 0.9x | 9.44M-dot OLED · 0.9x |
| Screen | Vari-angle 3" touchscreen | 4-axis tilting 3.2" touchscreen |
| Card slots | 2× CFexpress Type A / SDXC (UHS-II) | 2× CFexpress Type A / SDXC (UHS-II) |
| Battery | NP-FZ100 | NP-FZ100 |
| Dimensions | 128.9 x 96.9 x 80.8 mm | 136.1 x 96.9 x 82.9 mm |
| Weight | 699 g with battery & card · 614 g body | 702 g with battery & card · 617 g body |
Values that differ are in bold. From the makers' published specifications.
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