Sony α7S III (A7S III)
Basics
| Brand | Sony |
|---|---|
| Model code | ILCE-7SM3 |
| Released (Japan) ? | Oct 2020 |
| Mount | Sony E |
Sensor
| Sensor size | Full frame |
|---|---|
| Effective megapixels | 12.1 MP |
| Sensor type | BSI |
| ISO (min) | ISO 80 |
| ISO (max) | ISO 102400 |
Shutter
| Mechanical shutter (fastest) ? | 1/8000 s |
|---|---|
| Electronic shutter (fastest) | Not stated Spec sheet says "stills 1/8000 to 30 s" with no distinction between mechanical and electronic |
| Slowest shutter speed | 30 s |
| Flash sync speed | 1/250 s |
Burst
| Burst, mechanical shutter | 10 fps |
|---|---|
| Burst, electronic (AF tracking) ? | 10 fps Features page says "AF/AE tracking burst at up to approx. 10 fps with either mechanical or electronic shutter" |
| Burst, electronic (max) ? | 10 fps |
| Pre-capture ? | Not stated |
AF & stabilization
| Subject detection | Not stated |
|---|---|
| In-body stabilization | Yes |
| IBIS, body only ? | 5.5 stops CIPA, with Planar T* FE 50mm F1.4 ZA (a lens without stabilization) attached |
| IBIS, max (incl. lens) ? | 5.5 stops |
Viewfinder & monitor
| Viewfinder | Yes |
|---|---|
| Viewfinder resolution | 9.44M dots |
| Viewfinder magnification ? | 0.9x |
| Monitor size | 3.0 in |
| Monitor resolution | 1.44M dots |
| Monitor articulation | Vari-angle Opens approx. 176° and rotates approx. 270° |
| Touchscreen | Yes |
Video
| Max video resolution ? | 4K (3840) |
|---|---|
| 4K max frame rate | 120p 4K 120p has an approx. 10% crop |
| 4K max frame rate (no crop) ? | Not stated |
| Full HD max frame rate | 120p |
| 10-bit recording | Yes |
| Internal RAW video | No RAW is HDMI output only |
| Recording time limit ? | Not stated |
Body
| Weight, body only | 614 g |
|---|---|
| Weight, with battery ? | 699 g |
| Dimensions (W×H×D) | 128.9 × 96.9 × 80.8 mm |
| Weather sealing | Yes |
Storage, power & wireless
| Card slots | 2 |
|---|---|
| Card types | SD UHS-I, SD UHS-II, CFexpress Type A |
| Battery life (CIPA) ? | 600 shots Using the LCD monitor. Approx. 510 shots with the viewfinder |
| USB power | Power while shooting |
| Wireless | Wi-Fi, Bluetooth |
Sources
- https://www.sony.jp/CorporateCruise/Press/202007/20-0729/
- https://www.sony.jp/ichigan/products/ILCE-7SM3/spec.html
- https://www.sony.jp/ichigan/products/ILCE-7SM3/
Checked November 15, 2026. Sources are the maker's official Japanese website. Not stated means the value is not given there.