Specifications#
- Brand
- Ricoh
- Model
- GR Digital II
- Also known as
- GR DIGITAL 2
- Camera type
- Compact
- Sensor size
- 58.0 × 7.0 mm
- Crop factor
- 0.74×
- Resolution
- 10.1 MP (3,648 × 2,736 px)
- Weight
- 200 g (7.1 oz)
- Sensor
- 1/1.75" primary-color CCD (10.1 megapixels)
- Storage
- SD card, 54 MB internal memory
- Viewfinder
- External via hotshoe
- Metering
- 256 multi-segment, Spot, Center-weighted
- Battery
- 1× rechargeable DB-65 battery or 2× AAA batteries
- Dimensions
- 107.0 mm x 58.0 mm x 25.0 mm (W x H x D); does not include protruding parts
- Lens
- 5.9 mm (28 mm equivalent angle of view (AOV) in 35 mm full frame format), 2.4
Specifications merged from Wikipedia, Wikidata and openMVG. Spot an error? Tell us.
Sensor size compared#
Focal length equivalents & field of view#
Multiply any focal length by 0.74 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 |
|---|---|---|---|---|
| 21 mm | 16 mm | 108.2° | 18.9° | 108.6° |
| 23 mm | 17 mm | 103.2° | 17.3° | 103.6° |
| 28 mm | 21 mm | 92.0° | 14.3° | 92.4° |
| 32 mm | 24 mm | 84.4° | 12.5° | 84.8° |
| 35 mm | 26 mm | 79.3° | 11.4° | 79.7° |
| 45 mm | 33 mm | 65.6° | 8.9° | 66.0° |
| 55 mm | 41 mm | 55.6° | 7.3° | 55.9° |
| 63 mm | 47 mm | 49.4° | 6.4° | 49.8° |
| 80 mm | 59 mm | 39.9° | 5.0° | 40.1° |
| 90 mm | 67 mm | 35.7° | 4.5° | 36.0° |
| 110 mm | 81 mm | 29.5° | 3.6° | 29.7° |
| 120 mm | 89 mm | 27.2° | 3.3° | 27.4° |
| 150 mm | 111 mm | 21.9° | 2.7° | 22.0° |
| 180 mm | 133 mm | 18.3° | 2.2° | 18.4° |
| 250 mm | 185 mm | 13.2° | 1.6° | 13.3° |
| 350 mm | 259 mm | 9.5° | 1.1° | 9.5° |
Depth of field table#
Total depth of field at each subject distance, using a circle of confusion of 40.5 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 |
|---|---|---|---|---|---|---|---|---|
| 29 mm | f/1.8 | 4.1 cm | 17.0 cm | 70.4 cm | 1.66 m | 5.29 m | 68.4 m | 11.6 m |
| 29 mm | f/2.8 | 6.4 cm | 26.6 cm | 1.14 m | 2.86 m | 12.2 m | ∞ | 7.44 m |
| 29 mm | f/4 | 9.1 cm | 38.8 cm | 1.77 m | 5.11 m | 116 m | ∞ | 5.22 m |
| 29 mm | f/8 | 18.8 cm | 87.0 cm | 7.18 m | ∞ | ∞ | ∞ | 2.62 m |
| 58 mm | f/1.8 | 1.0 cm | 4.1 cm | 16.9 cm | 38.4 cm | 1.08 m | 4.52 m | 46.2 m |
| 58 mm | f/2.8 | 1.5 cm | 6.4 cm | 26.3 cm | 60.1 cm | 1.71 m | 7.55 m | 29.7 m |
| 58 mm | f/4 | 2.1 cm | 9.1 cm | 37.7 cm | 86.8 cm | 2.52 m | 12.4 m | 20.8 m |
| 58 mm | f/8 | 4.3 cm | 18.3 cm | 77.5 cm | 1.85 m | 6.16 m | 231 m | 10.4 m |
| 99 mm | f/1.8 | 0.3 cm | 1.3 cm | 5.7 cm | 13.0 cm | 36.5 cm | 1.48 m | 135 m |
| 99 mm | f/2.8 | 0.5 cm | 2.1 cm | 8.8 cm | 20.2 cm | 56.9 cm | 2.32 m | 86.5 m |
| 99 mm | f/4 | 0.7 cm | 3.0 cm | 12.6 cm | 28.8 cm | 81.6 cm | 3.36 m | 60.6 m |
| 99 mm | f/8 | 1.3 cm | 6.0 cm | 25.2 cm | 58.1 cm | 1.66 m | 7.33 m | 30.3 m |
| 162 mm | f/1.8 | 0.1 cm | 0.5 cm | 2.0 cm | 4.7 cm | 13.4 cm | 54.7 cm | 360 m |
| 162 mm | f/2.8 | 0.1 cm | 0.7 cm | 3.2 cm | 7.4 cm | 20.9 cm | 85.2 cm | 232 m |
| 162 mm | f/4 | 0.2 cm | 1.0 cm | 4.5 cm | 10.5 cm | 29.9 cm | 1.22 m | 162 m |
| 162 mm | f/8 | 0.4 cm | 2.1 cm | 9.1 cm | 21.1 cm | 60.0 cm | 2.47 m | 81.1 m |
Equivalent aperture#
Exposure is identical at the same f-number on any format; equivalence only describes depth of field and total light.
Diffraction & pixel pitch#
With 15.90 µm pixels, diffraction starts to soften pixel-level detail around f/23.7. For maximum sharpness keep landscapes between f/13.0 and f/24; stopping down further trades detail for depth of field.
| Aperture | Airy disk diameter | Spread over | At 100% view |
|---|---|---|---|
| f/2.8 | 3.8 µm | 0.2 px | sharp |
| f/4 | 5.4 µm | 0.3 px | sharp |
| f/5.6 | 7.5 µm | 0.5 px | sharp |
| f/8 | 10.7 µm | 0.7 px | sharp |
| f/11 | 14.8 µm | 0.9 px | sharp |
| f/16 | 21.5 µm | 1.4 px | sharp |
| f/22 | 29.5 µm | 1.9 px | sharp |
Maximum print sizes#
At 10.1 MP the Ricoh GR Digital II produces 3,648 × 2,736 pixel images. See the 10 megapixel guide or the print size calculator.
| Resolution | Typical use | Inches | Centimetres |
|---|---|---|---|
| 300 DPI | Photo-lab quality | 12.2 × 9.1 in | 31 × 23 cm |
| 240 DPI | Fine-art inkjet | 15.2 × 11.4 in | 39 × 29 cm |
| 200 DPI | Wall print | 18.2 × 13.7 in | 46 × 35 cm |
| 150 DPI | Poster, viewed from 1 m+ | 24.3 × 18.2 in | 62 × 46 cm |
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.
| Focal length | 500 rule | NPF f/1.8 | NPF f/2.8 | NPF f/4 |
|---|---|---|---|---|
| 19 mm (14 mm eq.) | 35.5 s | 28.4 s | 30.3 s | 32.5 s |
| 27 mm (20 mm eq.) | 25.0 s | 20.0 s | 21.3 s | 22.9 s |
| 32 mm (24 mm eq.) | 21.1 s | 16.9 s | 18.0 s | 19.3 s |
| 47 mm (35 mm eq.) | 14.4 s | 11.5 s | 12.2 s | 13.1 s |
| 68 mm (50 mm eq.) | 9.9 s | 7.9 s | 8.5 s | 9.1 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 |
|---|---|---|---|
| 32 mm | 1/25 s | 0.3 s | 1.3 s |
| 68 mm | 1/50 s | 1/6 s | 0.6 s |
| 135 mm | 1/100 s | 1/13 s | 0.3 s |
| 270 mm | 1/200 s | 1/25 s | 1/6 s |
Lens#
The Ricoh GR Digital II 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 × 0.74.
Frequently asked questions#
What is the crop factor of the Ricoh GR Digital II?
The Ricoh GR Digital II has a crop factor of 0.74× relative to 35 mm full frame (diagonal 58.4 mm vs 43.3 mm).
What size is the Ricoh GR Digital II sensor?
58.0 × 7.0 mm (58.0 × 7.0 mm), an area of 406 mm² — 47% of full frame.
Is the Ricoh GR Digital II full frame?
No — its sensor is larger than full frame (medium format).
How many megapixels does the Ricoh GR Digital II have?
10.1 megapixels (3,648 × 2,736 pixels), enough for a 12 × 9 inch print at 300 DPI.
How long can I expose the night sky with the Ricoh GR Digital II?
With a 27 mm lens (20 mm equivalent) the 500 rule gives 25 s and the stricter NPF rule at f/2.8 gives 21 s.
Sources & licences#
- Wikipedia: Ricoh GR Digital II — CC BY-SA 4.0
- Wikidata Q7332325 — CC0
- openMVG sensor width database — MPL-2.0
Last updated October 03, 2026 · How we calculate · Sources