Specifications#
- Brand
- Ricoh
- Model
- GR digital cameras
- Camera type
- Compact
- Released
- 2005
- Sensor size
- 23.5 × 15.6 mm (APS-C)
- Crop factor
- 1.53×
- Sensor type
- CCD, CMOS
- Lens
- 28 mm or 40 mm (equivalent)
Specifications merged from Wikipedia and Wikidata. Spot an error? Tell us.
Sensor size compared#
Focal length equivalents & field of view#
Multiply any focal length by 1.53 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 | 12 mm | 111.5° | 88.5° | 120.9° |
| 10 mm | 15 mm | 99.2° | 75.9° | 109.3° |
| 12 mm | 18 mm | 88.8° | 66.0° | 99.2° |
| 14 mm | 21 mm | 80.0° | 58.2° | 90.4° |
| 16 mm | 25 mm | 72.6° | 52.0° | 82.8° |
| 18 mm | 28 mm | 66.3° | 46.9° | 76.2° |
| 20 mm | 31 mm | 60.9° | 42.6° | 70.4° |
| 24 mm | 37 mm | 52.2° | 36.0° | 60.9° |
| 28 mm | 43 mm | 45.5° | 31.1° | 53.5° |
| 35 mm | 54 mm | 37.1° | 25.1° | 43.9° |
| 40 mm | 61 mm | 32.7° | 22.1° | 38.8° |
| 50 mm | 77 mm | 26.4° | 17.7° | 31.5° |
| 56 mm | 86 mm | 23.7° | 15.9° | 28.3° |
| 70 mm | 107 mm | 19.1° | 12.7° | 22.8° |
| 85 mm | 130 mm | 15.7° | 10.5° | 18.8° |
| 100 mm | 153 mm | 13.4° | 8.9° | 16.1° |
| 135 mm | 207 mm | 9.9° | 6.6° | 11.9° |
| 200 mm | 307 mm | 6.7° | 4.5° | 8.1° |
| 300 mm | 460 mm | 4.5° | 3.0° | 5.4° |
| 400 mm | 614 mm | 3.4° | 2.2° | 4.0° |
| 600 mm | 920 mm | 2.2° | 1.5° | 2.7° |
| 800 mm | 1227 mm | 1.7° | 1.1° | 2.0° |
Depth of field table#
Total depth of field at each subject distance, using a circle of confusion of 19.6 µm (the 0.030 mm full-frame standard scaled by the crop factor). Detailed tables: 24 mm f/1.8, 24 mm f/2.8, 35 mm f/1.8, 35 mm f/2.8, 50 mm f/1.8, 50 mm f/2.8.
| Focal | Aperture | 50.0 cm | 1.00 m | 2.00 m | 3.00 m | 5.00 m | 10.0 m | Hyperfocal |
|---|---|---|---|---|---|---|---|---|
| 14 mm | f/1.8 | 8.8 cm | 36.6 cm | 1.63 m | 4.52 m | 45.2 m | ∞ | 5.58 m |
| 14 mm | f/2.8 | 13.8 cm | 59.6 cm | 3.21 m | 16.5 m | ∞ | ∞ | 3.59 m |
| 14 mm | f/4 | 20.2 cm | 93.1 cm | 8.53 m | ∞ | ∞ | ∞ | 2.52 m |
| 14 mm | f/8 | 45.7 cm | 4.14 m | ∞ | ∞ | ∞ | ∞ | 1.27 m |
| 28 mm | f/1.8 | 2.1 cm | 8.7 cm | 35.7 cm | 81.5 cm | 2.35 m | 11.2 m | 22.3 m |
| 28 mm | f/2.8 | 3.3 cm | 13.6 cm | 56.2 cm | 1.30 m | 3.95 m | 27.1 m | 14.3 m |
| 28 mm | f/4 | 4.7 cm | 19.6 cm | 81.9 cm | 1.95 m | 6.58 m | 2.0 km | 10.0 m |
| 28 mm | f/8 | 9.5 cm | 40.3 cm | 1.86 m | 5.49 m | 643 m | ∞ | 5.04 m |
| 48 mm | f/1.8 | 0.7 cm | 2.9 cm | 11.9 cm | 27.1 cm | 76.1 cm | 3.11 m | 65.5 m |
| 48 mm | f/2.8 | 1.1 cm | 4.5 cm | 18.6 cm | 42.3 cm | 1.19 m | 5.01 m | 42.1 m |
| 48 mm | f/4 | 1.5 cm | 6.5 cm | 26.6 cm | 60.8 cm | 1.73 m | 7.63 m | 29.5 m |
| 48 mm | f/8 | 3.1 cm | 13.0 cm | 54.0 cm | 1.25 m | 3.79 m | 24.9 m | 14.8 m |
| 78 mm | f/1.8 | 0.2 cm | 1.1 cm | 4.4 cm | 10.1 cm | 28.5 cm | 1.15 m | 173 m |
| 78 mm | f/2.8 | 0.4 cm | 1.7 cm | 6.9 cm | 15.8 cm | 44.4 cm | 1.80 m | 111 m |
| 78 mm | f/4 | 0.5 cm | 2.4 cm | 9.9 cm | 22.6 cm | 63.5 cm | 2.59 m | 77.8 m |
| 78 mm | f/8 | 1.1 cm | 4.7 cm | 19.8 cm | 45.3 cm | 1.29 m | 5.46 m | 39.0 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 |
|---|---|
| 9 mm (14 mm eq.) | 36.2 s |
| 13 mm (20 mm eq.) | 25.1 s |
| 16 mm (25 mm eq.) | 20.4 s |
| 23 mm (35 mm eq.) | 14.2 s |
| 33 mm (51 mm eq.) | 9.9 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 |
|---|---|---|---|
| 16 mm | 1/25 s | 0.3 s | 1.3 s |
| 33 mm | 1/50 s | 1/6 s | 0.6 s |
| 65 mm | 1/100 s | 1/13 s | 0.3 s |
| 130 mm | 1/200 s | 1/25 s | 1/6 s |
Lens#
The Ricoh GR digital cameras 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 × 1.53.
Similar cameras#
Other APS-C cameras from around the same time.
- Nikon D40 2006
- Pentax K110D 2006
- Konica Minolta Maxxum 5D 2005
- Nikon D200 2005
- Nikon D50 2005
- Nikon D80 2006
- Sony Alpha 100 2006
- Konica Minolta Maxxum 7D 2004
- Nikon D2X 2004
- Nikon D70 2004
- Pentax *ist DS 2004
- Nikon D300 2007
Frequently asked questions#
What is the crop factor of the Ricoh GR digital cameras?
The Ricoh GR digital cameras has a crop factor of 1.53× relative to 35 mm full frame (diagonal 28.2 mm vs 43.3 mm).
What size is the Ricoh GR digital cameras sensor?
23.5 × 15.6 mm (APS-C), an area of 367 mm² — 42% of full frame.
Is the Ricoh GR digital cameras full frame?
No — its sensor is APS-C, which is 2.4× smaller in area than full frame.
How long can I expose the night sky with the Ricoh GR digital cameras?
With a 13 mm lens (20 mm equivalent) the 500 rule gives 25 s.
Sources & licences#
- Wikipedia: Ricoh GR digital cameras — CC BY-SA 4.0
- Wikidata Q25036420 — CC0
Last updated October 03, 2026 · How we calculate · Sources