Canon EOS R10 crop factor: 1.61×
The EOS R10 is Canon’s enthusiast APS-C body, with a 1.6× crop factor that turns its affordable RF telephotos into serious wildlife and sports lenses. Its 22.3 × 14.9 mm sensor has a 26.82 mm diagonal, so lenses frame 1.61× tighter than on full frame.
A 35 mm lens on Canon APS-C (1.61× crop) frames like a 56 mm lens on full frame. At f/1.8 it gives the depth of field of about f/2.9 there — but exposure stays the same as f/1.8.
- Horizontal field of view
- 35.3°
- Vertical field of view
- 24.0°
- Crop ratio
- 1.61×
- Sensor size
- 22.3 × 14.9 mm
Full-frame equivalent of a 35 mm f/1.8 lens on each format
| Sensor | Focal length | Aperture (DoF) |
|---|---|---|
| Full frame | 35 mm | f/1.8 |
| APS-C (1.5×) | 54 mm | f/2.8 |
| Canon APS-C (1.6×) | 56 mm | f/2.9 |
| Micro Four Thirds | 70 mm | f/3.6 |
| 1-inch | 96 mm | f/4.9 |
| Medium format (44×33) | 28 mm | f/1.4 |
| Phone main camera (1/1.3″) | 123 mm | f/6.3 |
Sensor size and crop factor
Crop factor is the full-frame diagonal (43.27 mm) divided by the sensor diagonal. For the EOS R10: √(22.3² + 14.9²) = 26.82 mm, and 43.27 ÷ 26.82 = 1.61.
| Property | Value |
|---|---|
| Sensor size | 22.3 × 14.9 mm |
| Diagonal | 26.82 mm |
| Crop factor (computed) | 1.61× |
| Crop factor quoted by the maker | 1.6× |
| Area vs full frame | 38% |
| Circle of confusion (diagonal ÷ 1443) | 0.019 mm |
| Resolution / pixel pitch | 24.2 MP · 3.71 µm |
| Lens mount | Canon RF |
Source: Canon specifications: approx. 22.3 × 14.9 mm (APS-C) CMOS sensor, approx. 24.2 effective megapixels.
Equivalent focal length and aperture for Canon RF lenses
The full-frame equivalent is the focal length × 1.61. The DoF-equivalent aperture (f-number × 1.61) describes depth of field and total light at the same framing; exposure — shutter speed and ISO — is set by the real f-number as usual. Hyperfocal distances use a 0.019 mm circle of confusion.
| Lens | Focal length | Full-frame equivalent | Max aperture | DoF-equivalent aperture | Horizontal view | Hyperfocal at f/8 |
|---|---|---|---|---|---|---|
| Canon RF-S 18–150mm F3.5–6.3 IS STM (kit)at 18 mm | 18 mm | 29.0 mm | f/3.5 | f/5.6 | 63.6° | 2.15 m7.05 ft |
| Canon RF-S 18–150mm F3.5–6.3 IS STM (kit)at 150 mm | 150 mm | 242 mm | f/6.3 | f/10.1 | 8.5° | 148 m486 ft |
| Canon RF-S 18–45mm F4.5–6.3 IS STM (kit)at 18 mm | 18 mm | 29.0 mm | f/4.5 | f/7.2 | 63.6° | 2.15 m7.05 ft |
| Canon RF-S 18–45mm F4.5–6.3 IS STM (kit)at 45 mm | 45 mm | 72.5 mm | f/6.3 | f/10.1 | 27.8° | 13.4 m43.9 ft |
| Canon RF 24mm F1.8 Macro IS STM | 24 mm | 38.6 mm | f/1.8 | f/2.9 | 49.8° | 3.81 m12.5 ft |
| Canon RF 35mm F1.8 Macro IS STM | 35 mm | 56.4 mm | f/1.8 | f/2.9 | 35.3° | 8.09 m26.6 ft |
| Canon RF 50mm F1.8 STM | 50 mm | 80.5 mm | f/1.8 | f/2.9 | 25.1° | 16.5 m54.1 ft |
| Canon RF 85mm F2 Macro IS STM | 85 mm | 137 mm | f/2 | f/3.2 | 14.9° | 47.6 m156 ft |
| Canon RF 100–400mm F5.6–8 IS USMat 100 mm | 100 mm | 161 mm | f/5.6 | f/9.0 | 12.7° | 65.9 m216 ft |
| Canon RF 100–400mm F5.6–8 IS USMat 400 mm | 400 mm | 644 mm | f/8 | f/12.9 | 3.2° | 1,053 m3,455 ft |
What is different about the EOS R10
The R10 uses the same 22.3 × 14.9 mm format as the R50, so its crop factor is also 1.61×. Where it differs is in how people use it: with a mechanical shutter, a deeper grip and fast bursts, it is often paired with the RF 100–400mm F5.6–8, which frames like a 161–644 mm lens. That is the cheapest route to a 600 mm-class field of view in the RF system.
The crop works against you at the wide end. The 18 mm end of both kit zooms is only a 29 mm equivalent, which feels tight indoors and for landscapes; the RF 24mm F1.8 (39 mm equivalent) is a "normal-wide" rather than a wide-angle on this body. The R10 has no in-body stabilisation, so pair long lenses with their optical IS.
FAQ
What is the crop factor of the Canon EOS R10?
1.61×. The 22.3 × 14.9 mm sensor has a 26.82 mm diagonal, and 43.27 ÷ 26.82 = 1.61. The maker rounds it to 1.6×.
What is the full-frame equivalent of the Canon RF-S 18–150mm F3.5–6.3 IS STM?
29–242 mm in field of view, with the depth of field of about f/5.6–f/10.1 on full frame. Exposure does not change: f/3.5 still needs the same shutter speed and ISO as f/3.5 on any camera.
What does the Canon RF 35mm F1.8 Macro IS STM equal on full frame?
About 56 mm f/2.9: the field of view of a 56 mm lens and the depth of field of f/2.9 on full frame. Its hyperfocal distance at f/8 on the EOS R10 is 8.09 m (26.6 ft).
Is the RF 100–400mm a good wildlife lens on the R10?
For the price, yes: on the 1.61× R10 it frames like a 161–644 mm lens. At f/8 on the long end its depth of field matches roughly f/12.9 on full frame — plenty to keep a whole bird sharp, but it needs good light or a higher ISO for fast shutter speeds.
Other cameras
- Sony a640023.5 × 15.6 mm · 1.53× crop
- Sony a670023.3 × 15.5 mm · 1.55× crop
- Sony ZV-E1023.5 × 15.6 mm · 1.53× crop
- Canon EOS R5022.3 × 14.9 mm · 1.61× crop
- Nikon Z5023.5 × 15.7 mm · 1.53× crop
- Fujifilm X-T523.5 × 15.6 mm · 1.53× crop
- Panasonic Lumix G9 II17.3 × 13 mm · 2.00× crop
- Sony RX100 series13.2 × 8.8 mm · 2.73× crop
- iPhone 17 Pro main camera≈ 10.0 × 7.5 mm · 3.46× crop
More on the Canon APS-C format — depth of field, hyperfocal and star charts — on the Canon APS-C (1.6×) sensor page. The theory is in crop factor explained.