Micro Four Thirds sensor size
Micro Four Thirds uses a 4:3 sensor shared by OM System and Panasonic Lumix G bodies. Its crop factor is close to 2×, which makes mental conversion simple: roughly double the focal length.
Also called: MFT, M4/3, Four Thirds
Dimensions
- Width × height
- 17.3 × 13 mm
- Diagonal
- 21.6 mm
- Sensor area
- 225 mm²
- Crop factor
- 2.00×
- Aspect ratio
- 4:3
Its area is -74% compared with full frame, and a lens mounted on it frames like a lens 2.00× longer on full frame.
- Full Frame 36 × 24 mm
- Micro Four Thirds 17.3 × 13 mm
Drawn to scale and centred on the lens axis.
Full-frame equivalent focal lengths on Micro Four Thirds
What common lenses frame like when mounted on Micro Four Thirds. Field of view is computed from this sensor's actual width and diagonal.
| Lens | Full-frame equivalent | Horizontal FoV | Diagonal FoV |
|---|---|---|---|
| 14 mm | 28.0 mm | 63.4° | 75.4° |
| 24 mm | 48.0 mm | 39.6° | 48.5° |
| 35 mm | 70.0 mm | 27.8° | 34.4° |
| 50 mm | 100.0 mm | 19.6° | 24.4° |
| 85 mm | 169.9 mm | 11.6° | 14.5° |
| 135 mm | 269.9 mm | 7.3° | 9.2° |
| 200 mm | 399.9 mm | 5.0° | 6.2° |
Lens needed on Micro Four Thirds to match a full-frame view
Divide a full-frame focal length by 2.00× to find the lens that gives the same view on Micro Four Thirds. Real lenses come in fixed focal lengths, so pick the nearest one available.
| Full-frame view | Focal length on Micro Four Thirds |
|---|---|
| 14 mm on full frame | 7.0 mm |
| 24 mm on full frame | 12.0 mm |
| 35 mm on full frame | 17.5 mm |
| 50 mm on full frame | 25.0 mm |
| 85 mm on full frame | 42.5 mm |
| 135 mm on full frame | 67.5 mm |
| 200 mm on full frame | 100.0 mm |
Calculate with Micro Four Thirds
- Equivalent focal length on Micro Four Thirds
- Field of view on Micro Four Thirds
- Compare Micro Four Thirds with another format
Comparisons
Closest formats by size
- APS-C (Canon) 1.61× · +48% area
- 1-inch 2.73× · -48% area
- APS-C (Sony, Nikon, Fujifilm) 1.53× · +65% area