Specifications#
- Brand
- Olympus
- Model
- C-2
- Also known as
- C2,D230
- Camera type
- Compact
- Released
- 2001-01-01
- Sensor size
- 5.3 × 4.0 mm (1/2.5" sensor)
- Crop factor
- 6.52×
Specifications merged from Wikidata and openMVG. Spot an error? Tell us.
Sensor size compared#
Focal length equivalents & field of view#
Multiply any focal length by 6.52 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 |
|---|---|---|---|---|
| 4 mm | 26 mm | 67.1° | 52.9° | 79.4° |
| 4.5 mm | 29 mm | 61.1° | 47.7° | 72.8° |
| 5 mm | 33 mm | 55.9° | 43.4° | 67.1° |
| 6 mm | 39 mm | 47.7° | 36.7° | 57.9° |
| 8 mm | 52 mm | 36.7° | 27.9° | 45.1° |
| 10 mm | 65 mm | 29.7° | 22.5° | 36.7° |
| 12 mm | 78 mm | 25.0° | 18.8° | 30.9° |
| 15 mm | 98 mm | 20.1° | 15.1° | 24.9° |
| 20 mm | 130 mm | 15.1° | 11.4° | 18.8° |
| 25 mm | 163 mm | 12.1° | 9.1° | 15.1° |
| 30 mm | 196 mm | 10.1° | 7.6° | 12.6° |
| 40 mm | 261 mm | 7.6° | 5.7° | 9.5° |
| 50 mm | 326 mm | 6.1° | 4.6° | 7.6° |
| 70 mm | 456 mm | 4.3° | 3.3° | 5.4° |
| 100 mm | 652 mm | 3.0° | 2.3° | 3.8° |
| 150 mm | 978 mm | 2.0° | 1.5° | 2.5° |
Depth of field table#
Total depth of field at each subject distance, using a circle of confusion of 4.6 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 |
|---|---|---|---|---|---|---|---|---|
| 4 mm | f/2 | 31.1 cm | 1.71 m | ∞ | ∞ | ∞ | ∞ | 1.74 m |
| 4 mm | f/2.8 | 47.5 cm | 4.50 m | ∞ | ∞ | ∞ | ∞ | 1.25 m |
| 4 mm | f/4 | 84.6 cm | ∞ | ∞ | ∞ | ∞ | ∞ | 87.3 cm |
| 4 mm | f/8 | ∞ | ∞ | ∞ | ∞ | ∞ | ∞ | 43.9 cm |
| 7 mm | f/2 | 9.3 cm | 38.6 cm | 1.74 m | 4.93 m | 77.7 m | ∞ | 5.33 m |
| 7 mm | f/2.8 | 13.2 cm | 56.0 cm | 2.89 m | 12.4 m | ∞ | ∞ | 3.81 m |
| 7 mm | f/4 | 19.2 cm | 86.7 cm | 6.81 m | ∞ | ∞ | ∞ | 2.67 m |
| 7 mm | f/8 | 42.9 cm | 3.36 m | ∞ | ∞ | ∞ | ∞ | 1.34 m |
| 12 mm | f/2 | 3.1 cm | 12.7 cm | 51.7 cm | 1.19 m | 3.55 m | 21.5 m | 15.7 m |
| 12 mm | f/2.8 | 4.4 cm | 17.8 cm | 73.5 cm | 1.73 m | 5.57 m | 88.7 m | 11.2 m |
| 12 mm | f/4 | 6.3 cm | 25.7 cm | 1.09 m | 2.68 m | 10.7 m | ∞ | 7.84 m |
| 12 mm | f/8 | 12.7 cm | 54.0 cm | 2.74 m | 11.0 m | ∞ | ∞ | 3.92 m |
| 20 mm | f/2 | 1.1 cm | 4.5 cm | 18.3 cm | 41.3 cm | 1.16 m | 4.85 m | 43.5 m |
| 20 mm | f/2.8 | 1.5 cm | 6.3 cm | 25.6 cm | 58.1 cm | 1.65 m | 7.17 m | 31.1 m |
| 20 mm | f/4 | 2.2 cm | 9.0 cm | 36.7 cm | 83.8 cm | 2.42 m | 11.6 m | 21.8 m |
| 20 mm | f/8 | 4.4 cm | 18.2 cm | 75.4 cm | 1.78 m | 5.80 m | 117 m | 10.9 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 |
|---|---|
| 4 mm (26 mm eq.) | 19.2 s |
| 5 mm (33 mm eq.) | 15.3 s |
| 6 mm (39 mm eq.) | 12.8 s |
| 7 mm (46 mm eq.) | 11.0 s |
| 8 mm (52 mm eq.) | 9.6 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 |
|---|---|---|---|
| 4 mm | 1/25 s | 0.3 s | 1.3 s |
| 8 mm | 1/50 s | 1/6 s | 0.6 s |
| 15 mm | 1/100 s | 1/13 s | 0.3 s |
| 31 mm | 1/200 s | 1/25 s | 1/6 s |
Lens#
The Olympus C-2 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 × 6.52.
Similar cameras#
Other 1/2.5" cameras from around the same time.
Frequently asked questions#
What is the crop factor of the Olympus C-2?
The Olympus C-2 has a crop factor of 6.52× relative to 35 mm full frame (diagonal 6.6 mm vs 43.3 mm).
What size is the Olympus C-2 sensor?
5.3 × 4.0 mm (1/2.5"), an area of 21 mm² — 2% of full frame.
Is the Olympus C-2 full frame?
No — its sensor is 1/2.5", which is 40.9× smaller in area than full frame.
How long can I expose the night sky with the Olympus C-2?
With a 5 mm lens (33 mm equivalent) the 500 rule gives 15 s.
Sources & licences#
- Wikidata Q20889133 — CC0
- openMVG sensor width database — MPL-2.0
Last updated October 03, 2026 · How we calculate · Sources