27.9×18.6 mm
Dimensions
1.29×
Crop factor
519 mm²
Area (60% of FF)
-0.7
Stops of light vs full frame
3:2
Aspect ratio
23.2 µm
Circle of confusion
About APS-H#
A 1.3× crop format used in Canon's EOS-1D sports bodies (2001–2012).
Typical cameras: Canon EOS-1D Mark IV, Leica M8.
Compared to other formats#
Lens needed for the same framing#
| Full-frame focal length | Equivalent on APS-H | Horizontal angle |
|---|---|---|
| 14 mm | 10.8 mm | 104.3° |
| 24 mm | 18.6 mm | 73.7° |
| 35 mm | 27.1 mm | 54.4° |
| 50 mm | 38.7 mm | 39.6° |
| 85 mm | 65.9 mm | 23.9° |
| 135 mm | 104.6 mm | 15.2° |
| 200 mm | 155.0 mm | 10.3° |
Equivalent aperture for depth of field#
| On APS-H | Full-frame equivalent |
|---|---|
| f/1.4 | f/1.8 |
| f/2 | f/2.6 |
| f/2.8 | f/3.6 |
| f/4 | f/5.2 |
| f/5.6 | f/7.2 |
| f/8 | f/10.3 |
Cameras with a APS-H sensor#
15 cameras in our database.
Frequently asked questions#
What is the crop factor of APS-H?
1.29× (diagonal 33.5 mm vs 43.3 mm for full frame).
How big is a APS-H sensor?
27.9 × 18.6 mm, an area of 519 mm².
Is APS-H good in low light?
At the same exposure it gathers 0.7 stops less total light than full frame, so expect roughly that much more visible noise at equal print size. Modern processing narrows but doesn't erase the gap.
Last updated October 03, 2026 · How we calculate · Sources