Specifications#
- Brand
- Sony
- Model
- RX100 III
- Also known as
- DSC-RX100M3
- Camera type
- Compact
- Sensor size
- 12.7 × 9.5 mm (1" (one-inch) sensor)
- Crop factor
- 2.73×
Specifications merged from Lensfun. Spot an error? Tell us.
Sensor size compared#
Focal length equivalents & field of view#
Multiply any focal length by 2.73 to get the full-frame field of view. For fixed-lens cameras use the real focal length printed on the lens (e.g. “6.1–18.3 mm”), not the 35 mm equivalent.
| Lens on this camera | Full-frame equivalent | Horizontal | Vertical | Diagonal |
|---|---|---|---|---|
| 8 mm | 22 mm | 76.8° | 61.5° | 89.5° |
| 10 mm | 27 mm | 64.7° | 50.9° | 76.8° |
| 12 mm | 33 mm | 55.7° | 43.2° | 66.9° |
| 14 mm | 38 mm | 48.7° | 37.5° | 59.0° |
| 16 mm | 44 mm | 43.2° | 33.1° | 52.7° |
| 18 mm | 49 mm | 38.8° | 29.6° | 47.5° |
| 20 mm | 55 mm | 35.2° | 26.7° | 43.2° |
| 24 mm | 66 mm | 29.6° | 22.4° | 36.5° |
| 28 mm | 76 mm | 25.5° | 19.3° | 31.6° |
| 35 mm | 96 mm | 20.5° | 15.5° | 25.5° |
| 40 mm | 109 mm | 18.0° | 13.6° | 22.4° |
| 50 mm | 136 mm | 14.5° | 10.9° | 18.0° |
| 56 mm | 153 mm | 12.9° | 9.7° | 16.1° |
| 70 mm | 191 mm | 10.4° | 7.8° | 12.9° |
| 85 mm | 232 mm | 8.5° | 6.4° | 10.7° |
| 100 mm | 273 mm | 7.3° | 5.4° | 9.1° |
| 135 mm | 369 mm | 5.4° | 4.0° | 6.7° |
| 200 mm | 546 mm | 3.6° | 2.7° | 4.5° |
| 300 mm | 819 mm | 2.4° | 1.8° | 3.0° |
| 400 mm | 1092 mm | 1.8° | 1.4° | 2.3° |
Depth of field table#
Total depth of field at each subject distance, using a circle of confusion of 11.0 µm (the 0.030 mm full-frame standard scaled by the crop factor).
| Focal | Aperture | 50.0 cm | 1.00 m | 2.00 m | 3.00 m | 5.00 m | 10.0 m | Hyperfocal |
|---|---|---|---|---|---|---|---|---|
| 8 mm | f/1.8 | 15.6 cm | 67.7 cm | 3.97 m | 38.3 m | ∞ | ∞ | 3.24 m |
| 8 mm | f/2.8 | 25.1 cm | 1.23 m | 46.3 m | ∞ | ∞ | ∞ | 2.09 m |
| 8 mm | f/4 | 38.2 cm | 2.54 m | ∞ | ∞ | ∞ | ∞ | 1.46 m |
| 8 mm | f/8 | 1.24 m | ∞ | ∞ | ∞ | ∞ | ∞ | 73.6 cm |
| 16 mm | f/1.8 | 3.7 cm | 15.3 cm | 62.8 cm | 1.46 m | 4.52 m | 38.1 m | 13.0 m |
| 16 mm | f/2.8 | 5.8 cm | 24.0 cm | 1.01 m | 2.47 m | 9.34 m | ∞ | 8.34 m |
| 16 mm | f/4 | 8.4 cm | 34.8 cm | 1.54 m | 4.17 m | 32.0 m | ∞ | 5.84 m |
| 16 mm | f/8 | 17.1 cm | 76.3 cm | 5.09 m | ∞ | ∞ | ∞ | 2.93 m |
| 27 mm | f/1.8 | 1.3 cm | 5.3 cm | 21.5 cm | 48.7 cm | 1.37 m | 5.84 m | 36.9 m |
| 27 mm | f/2.8 | 2.0 cm | 8.2 cm | 33.5 cm | 76.5 cm | 2.20 m | 10.2 m | 23.7 m |
| 27 mm | f/4 | 2.9 cm | 11.8 cm | 48.3 cm | 1.11 m | 3.30 m | 18.8 m | 16.6 m |
| 27 mm | f/8 | 5.7 cm | 23.8 cm | 1.01 m | 2.47 m | 9.37 m | ∞ | 8.32 m |
| 45 mm | f/1.8 | 0.4 cm | 1.9 cm | 7.6 cm | 17.3 cm | 48.5 cm | 1.96 m | 102 m |
| 45 mm | f/2.8 | 0.7 cm | 2.9 cm | 11.9 cm | 27.0 cm | 75.7 cm | 3.10 m | 65.9 m |
| 45 mm | f/4 | 1.0 cm | 4.1 cm | 17.0 cm | 38.6 cm | 1.09 m | 4.53 m | 46.1 m |
| 45 mm | f/8 | 2.0 cm | 8.3 cm | 34.2 cm | 78.3 cm | 2.26 m | 10.6 m | 23.1 m |
Equivalent aperture#
Exposure is identical at the same f-number on any format; equivalence only describes depth of field and total light.
Night-sky exposure limits#
Longest exposure before stars trail. The NPF rule accounts for pixel pitch and is stricter than the classic 500 rule — use it for pin-sharp stars on high-resolution sensors. (NPF needs a known resolution and is omitted here.)
| Focal length | 500 rule |
|---|---|
| 5 mm (14 mm eq.) | 36.6 s |
| 7 mm (19 mm eq.) | 26.2 s |
| 9 mm (25 mm eq.) | 20.4 s |
| 13 mm (35 mm eq.) | 14.1 s |
| 18 mm (49 mm eq.) | 10.2 s |
Handheld shutter speed guide#
The reciprocal rule uses the equivalent focal length. High-resolution sensors may need one stop faster than this for pixel-sharp results.
| Focal length | No stabilisation (1/equiv. focal) | With 3-stop IS | With 5-stop IBIS |
|---|---|---|---|
| 9 mm | 1/25 s | 0.3 s | 1.3 s |
| 18 mm | 1/50 s | 1/6 s | 0.6 s |
| 37 mm | 1/100 s | 1/13 s | 0.3 s |
| 73 mm | 1/200 s | 1/25 s | 1/6 s |
Lens#
The Sony RX100 III has a built-in, non-interchangeable lens. Use the real focal length of that lens with the tables above; its full-frame equivalent is that number × 2.73.
Similar cameras#
Other 1" (one-inch) cameras from around the same time.
- Nikon 1 V1 2011
- Nikon 1 V3 2014
- Nikon 1 J5 2015
- Samsung NX mini
- Nikon 1 J1 2011
- Nikon 1 AW1 2013
- Nikon 1 S1 2013
- Nikon 1 S2 2014
- Panasonic Lumix DMC-FZ1000 2014
- Canon PowerShot G3 X 2015
- Panasonic Lumix DMC-LX10 2016
- Canon PowerShot G5 X
Frequently asked questions#
What is the crop factor of the Sony RX100 III?
The Sony RX100 III has a crop factor of 2.73× relative to 35 mm full frame (diagonal 15.8 mm vs 43.3 mm).
What size is the Sony RX100 III sensor?
12.7 × 9.5 mm (1" (one-inch)), an area of 121 mm² — 14% of full frame.
Is the Sony RX100 III full frame?
No — its sensor is 1" (one-inch), which is 7.2× smaller in area than full frame.
How long can I expose the night sky with the Sony RX100 III?
With a 7 mm lens (19 mm equivalent) the 500 rule gives 26 s.
Sources & licences#
- Lensfun camera database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources