Camera sensor sizes
Physical dimensions of the 7 sensor formats Seroix covers, with diagonal, area and crop factor computed from width and height. Full frame is the reference for crop factor.
Sensor size table
| Format | Width × height | Diagonal | Area | Area vs full frame | Crop factor | Aspect |
|---|---|---|---|---|---|---|
| Medium Format 44×33 | 43.8 × 32.9 mm | 54.8 mm | 1,441 mm² | 167% | 0.79× | 4:3 |
| Full Frame | 36 × 24 mm | 43.3 mm | 864 mm² | 100% | 1.00× | 3:2 |
| APS-H | 27.9 × 18.6 mm | 33.5 mm | 519 mm² | 60% | 1.29× | 3:2 |
| APS-C (Sony, Nikon, Fujifilm) | 23.6 × 15.7 mm | 28.3 mm | 371 mm² | 43% | 1.53× | 3:2 |
| APS-C (Canon) | 22.3 × 14.9 mm | 26.8 mm | 332 mm² | 38% | 1.61× | 3:2 |
| Micro Four Thirds | 17.3 × 13 mm | 21.6 mm | 225 mm² | 26% | 2.00× | 4:3 |
| 1-inch | 13.2 × 8.8 mm | 15.9 mm | 116 mm² | 13% | 2.73× | 3:2 |
How crop factor is calculated
Crop factor compares the diagonal of a sensor with the diagonal of full frame (43.3 mm). Because it uses the diagonal, it describes how much narrower the diagonal field of view is. Two sensors with different aspect ratios can share a diagonal and still crop the scene to different shapes, which is why the width and height are listed separately.
Manufacturers round crop factors, usually to one decimal. Seroix keeps two decimals from the computed value, so Sony, Nikon and Fujifilm APS-C shows as 1.53× and Canon APS-C as 1.61×.
Crop factorfull-frame diagonal ÷ sensor diagonal
Equivalent focal lengthfocal length × crop factor
Field of view2 × atan(sensor dimension ÷ (2 × focal length))
Format reference
- Medium Format 44×33The 44×33 digital medium format used by Fujifilm GFX, Hasselblad X and Pentax 645 bodies. It is larger than full frame, so its crop factor is below 1: a lens frames wider here than on full frame.Also called: 44x33, Fujifilm GFX, Hasselblad X, Pentax 645 digital
- Full FrameFull frame matches the frame size of classic 35 mm film. It is the reference format for crop factor and focal-length equivalence: a lens on full frame gives exactly the field of view its focal length implies.Also called: 35mm format, FX (Nikon), 135 format
- APS-HAPS-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
- APS-C (Sony, Nikon, Fujifilm)The APS-C size used by Sony, Nikon DX, Fujifilm X and Pentax. Its crop factor is often rounded to 1.5×; computed from the sensor diagonal it is slightly higher, so equivalent focal lengths come out a little longer than the rounded rule suggests.Also called: APS-C, Nikon DX, Sony E APS-C, Fujifilm X, Pentax K APS-C
- APS-C (Canon)Canon's APS-C sensor is smaller than the Sony, Nikon and Fujifilm version, which is why Canon quotes a 1.6× crop instead of 1.5×. The same lens therefore frames tighter on a Canon APS-C body.Also called: Canon APS-C, Canon EF-S, Canon RF-S
- Micro Four ThirdsMicro 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
- 1-inchThe 1-inch type sensor used in premium compacts and some drones is far smaller than the name suggests. The name is a legacy video-tube convention; no dimension of the sensor measures one inch.Also called: 1", 1-inch type, Nikon CX
Sources
- Wikipedia, Image sensor format (table of sensor formats and sizes)
- Wikipedia, Image sensor format (APS-C: Sony α/E, Nikon DX, Pentax K, Fujifilm X)
- Wikipedia, Image sensor format (Canon EF-S, APS-C)
- Wikipedia, Image sensor format (Four Thirds, Micro Four Thirds)
- Wikipedia, Image sensor format (1": Nikon CX, Sony RX100, Sony RX10, Sony ZV-1)
- Fujifilm, GFX100S II specifications (image sensor 43.8 mm × 32.9 mm)
- Wikipedia, Image sensor format (Canon APS-H)