f/10
Aperture
6.6
Stops less light than f/1
1.00%
Light vs f/1
2.43 m
DoF: 50 mm at 3 m (FF)
13.4 µm
Airy disk diameter
Depth of field at f/10 (full frame)#
| Focal | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal |
|---|---|---|---|---|---|
| 16 mm | ∞ | ∞ | ∞ | ∞ | 86.9 cm |
| 24 mm | 1.37 m | ∞ | ∞ | ∞ | 1.94 m |
| 35 mm | 50.1 cm | 2.50 m | ∞ | ∞ | 4.12 m |
| 50 mm | 23.1 cm | 99.0 cm | 9.18 m | ∞ | 8.38 m |
| 85 mm | 7.6 cm | 32.0 cm | 2.13 m | 9.91 m | 24.2 m |
| 135 mm | 2.8 cm | 12.3 cm | 80.6 cm | 3.34 m | 60.9 m |
| 200 mm | 1.2 cm | 5.4 cm | 36.0 cm | 1.48 m | 134 m |
Diffraction at f/10#
Diffraction softening becomes visible at 100% once the Airy disk spans more than about two pixels. It is a gradual effect, not a cliff.
| Sensor | Pixel pitch | Airy disk / pixel | Pixel-level sharpness |
|---|---|---|---|
| Full frame 24 MP | 6.00 µm | 2.2× | slight softening |
| Full frame 45 MP | 4.39 µm | 3.1× | slight softening |
| Full frame 61 MP | 3.79 µm | 3.5× | diffraction-limited |
| APS-C 24 MP | 3.92 µm | 3.4× | diffraction-limited |
| APS-C 40 MP | 3.04 µm | 4.4× | diffraction-limited |
| Micro Four Thirds 20 MP | 3.34 µm | 4.0× | diffraction-limited |
| 1-inch 20 MP | 2.41 µm | 5.6× | diffraction-limited |
| Smartphone 1/1.3" 50 MP | 1.17 µm | 11.5× | diffraction-limited |
f/10 on smaller sensors equals…#
Exposure (brightness) is the same at a given f-number on every format; equivalence describes depth of field and total light.
| Used on | Full-frame equivalent depth of field |
|---|---|
| APS-C (1.5×) | f/15.0 |
| Canon APS-C (1.6×) | f/16.0 |
| Micro Four Thirds (2×) | f/20.0 |
| 1-inch (2.7×) | f/27.0 |
Shutter speed at f/10#
| Light | ISO 100 | ISO 400 | ISO 1600 | ISO 6400 |
|---|---|---|---|---|
| EV 15 · Bright sun, distinct shadows (Sunny 16) | 1/320 s | 1/1250 s | 1/5000 s | too bright |
| EV 13 · Cloudy-bright, no shadows | 1/80 s | 1/320 s | 1/1250 s | 1/5000 s |
| EV 12 · Heavy overcast / open shade | 1/40 s | 1/160 s | 1/640 s | 1/2500 s |
| EV 10 · Just after sunset | 1/10 s | 1/40 s | 1/160 s | 1/640 s |
| EV 8 · Bright interior, city street at night | 0.4 s | 1/10 s | 1/40 s | 1/160 s |
| EV 5 · Home interior at night | 3.2 s | 0.8 s | 1/5 s | 1/20 s |
| EV 2 · Distant city lights | 25 s | 6 s | 1.6 s | 0.4 s |
| EV -2 · Moonlit landscape | > 4 min | 2 min | 25 s | 6 s |
When to use f/10#
f/10 is a go-to setting for landscapes and architecture needing front-to-back sharpness on full frame, and sunstars.
Other apertures#
Frequently asked questions#
Is f/10 a wide aperture?
No — f/10 is a small (narrow) aperture. Smaller numbers mean larger openings.
How much light does f/10 let in compared to f/2.8?
0.08× (-3.7 stops).
Last updated October 03, 2026 · How we calculate · Sources