1/2.3-Inch Sensor (6.17×4.55 mm)
Direct Answer
The 1/2.3-Inch Sensor format (measuring 6.17 × 4.55 mm with an active area of 28.07 mm² and a 7.66 mm diagonal) is the historical standard for point-and-shoot digital cameras, superzoom bridge cameras, action cameras (GoPro Hero 3 through Hero 10), and entry-level consumer camera drones, operating with a 5.64× crop factor.
Source: CIPA / Sony Exmor R Specifications / GoPro Technical Notes
Specs
| Width × Height | 6.17 × 4.55 mm (0.243 × 0.179 in) |
| Diagonal Dimension | 7.66 mm |
| Active Surface Area | 28.07 mm² (approx. 3.25% of 35mm full frame) |
| Crop Factor | 5.64× (5.6×) |
| Native Aspect Ratio | 4 : 3 |
| Pixel Pitch (Typical 12 MP) | Approx. 1.55 µm |
| Historical Deployments | GoPro Hero 3/4/5/6/7/8/9/10, DJI Mavic Mini / Mini 2, Nikon Coolpix superzooms |
Superzoom and Action Camera Compactness
Because of its tiny $7.66\text{ mm}$ diagonal and 5.64× crop factor, a tiny $4.3\text{ mm}$ physical lens provides a wide $24\text{ mm}$ field of view on $1/2.3\text{''}$ sensors, enabling action cameras and $60\times$ optical zoom bridge cameras to remain lightweight and pocketable.