1.0-Type / 1-Inch Sensor (13.2×8.8 mm)
Direct Answer
The 1.0-Type Sensor (commonly called a 1-Inch Sensor, measuring 13.2 × 8.8 mm with an active area of 116.2 mm² and a 15.86 mm diagonal) operates with a 2.72× crop factor and a native 3:2 aspect ratio. Originating from historical 1-inch vidicon video camera tubes, it is the benchmark format for premium compact cameras, creator vlogging cameras, and cinematic consumer drones.
Source: Sony Semiconductor Solutions CX Format / IEEE Standard Tube Conventions
Specs
| Width × Height | 13.2 × 8.8 mm (0.520 × 0.346 in) |
| Diagonal Dimension | 15.86 mm |
| Active Surface Area | 116.2 mm² (approx. 4.1× larger than standard 1/2.3" compact sensors) |
| Crop Factor | 2.72× (approx. 2.7×) |
| Native Aspect Ratio | 3 : 2 |
| Vidicon Tube Origin | Named for a 1-inch outer diameter glass video tube with a 16 mm usable target diagonal |
| Popular Implementations | Sony RX100 VII / ZV-1, Canon PowerShot G7 X III, DJI Pocket 3, DJI Air 2S / Mavic 3 Pro (tele) |
Why '1-Inch' Does Not Measure 1 Inch
The '1-inch' sensor diagonal is 15.86 mm (0.62 in), not $25.4\text{ mm}$ ($1.0\text{ inch}$). This naming persists from 1950s TV broadcasting: a $1\text{-inch}$ vacuum vidicon tube had a glass envelope with an outside diameter of $1\text{ inch}$, but its internal light-sensitive target area was only $16\text{ mm}$ diagonal. Sensor manufacturers retain these historical 'optical format' tube inch equivalents.