APS-H sensor size
APS-H sits between APS-C and full frame. Canon used it in EOS-1D professional bodies; it is mainly relevant today for used cameras and older lens planning.
Also called: Canon APS-H, 1.3× crop
Dimensions
- Width × height
- 27.9 × 18.6 mm
- Diagonal
- 33.5 mm
- Sensor area
- 519 mm²
- Crop factor
- 1.29×
- Aspect ratio
- 3:2
Its area is -40% compared with full frame, and a lens mounted on it frames like a lens 1.29× longer on full frame.
- Full Frame 36 × 24 mm
- APS-H 27.9 × 18.6 mm
Drawn to scale and centred on the lens axis.
Full-frame equivalent focal lengths on APS-H
What common lenses frame like when mounted on APS-H. Field of view is computed from this sensor's actual width and diagonal.
| Lens | Full-frame equivalent | Horizontal FoV | Diagonal FoV |
|---|---|---|---|
| 14 mm | 18.1 mm | 89.8° | 100.3° |
| 24 mm | 31.0 mm | 60.3° | 69.9° |
| 35 mm | 45.2 mm | 43.5° | 51.2° |
| 50 mm | 64.5 mm | 31.2° | 37.1° |
| 85 mm | 109.7 mm | 18.6° | 22.3° |
| 135 mm | 174.2 mm | 11.8° | 14.2° |
| 200 mm | 258.1 mm | 8.0° | 9.6° |
Lens needed on APS-H to match a full-frame view
Divide a full-frame focal length by 1.29× to find the lens that gives the same view on APS-H. Real lenses come in fixed focal lengths, so pick the nearest one available.
| Full-frame view | Focal length on APS-H |
|---|---|
| 14 mm on full frame | 10.8 mm |
| 24 mm on full frame | 18.6 mm |
| 35 mm on full frame | 27.1 mm |
| 50 mm on full frame | 38.7 mm |
| 85 mm on full frame | 65.9 mm |
| 135 mm on full frame | 104.6 mm |
| 200 mm on full frame | 155.0 mm |
Calculate with APS-H
Closest formats by size
- APS-C (Sony, Nikon, Fujifilm) 1.53× · -29% area
- APS-C (Canon) 1.61× · -36% area
- Full Frame 1.00× · +66% area