Specifications#
- Brand
- Ricoh
- Model
- GXR
- Also known as
- GXR A12, GXR A16, GXR P10, GXR S10
- Camera type
- Large-sensor compact
- Released
- 2009-12-18
- Sensor size
- 23.7 × 15.8 mm (APS-C)
- Crop factor
- 1.52×
- Resolution
- 10 MP (3,873 × 2,582 px)
- Weight
- 160 g (5.6 oz)
- Sensor type
- Varies (CCD in S10; CMOS in P10, A12 and A16 modules)
- Shutter
- leaf (A12, A16, P10, S10) or focal plane (GXR Mount)
- Battery
- Ricoh DB-90 3.6V
- Dimensions
- 113.9 x (body only, excluding projections)
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 1.52 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 |
|---|---|---|---|---|
| 8 mm | 12 mm | 112.0° | 89.3° | 121.4° |
| 10 mm | 15 mm | 99.7° | 76.6° | 109.9° |
| 12 mm | 18 mm | 89.3° | 66.7° | 99.8° |
| 14 mm | 21 mm | 80.5° | 58.9° | 91.0° |
| 16 mm | 24 mm | 73.0° | 52.6° | 83.3° |
| 18 mm | 27 mm | 66.7° | 47.4° | 76.7° |
| 20 mm | 30 mm | 61.3° | 43.1° | 70.9° |
| 24 mm | 36 mm | 52.6° | 36.4° | 61.4° |
| 28 mm | 43 mm | 45.9° | 31.5° | 53.9° |
| 35 mm | 53 mm | 37.4° | 25.4° | 44.3° |
| 40 mm | 61 mm | 33.0° | 22.3° | 39.2° |
| 50 mm | 76 mm | 26.7° | 18.0° | 31.8° |
| 56 mm | 85 mm | 23.9° | 16.1° | 28.5° |
| 70 mm | 106 mm | 19.2° | 12.9° | 23.0° |
| 85 mm | 129 mm | 15.9° | 10.6° | 19.0° |
| 100 mm | 152 mm | 13.5° | 9.0° | 16.2° |
| 135 mm | 205 mm | 10.0° | 6.7° | 12.0° |
| 200 mm | 304 mm | 6.8° | 4.5° | 8.1° |
| 300 mm | 456 mm | 4.5° | 3.0° | 5.4° |
| 400 mm | 608 mm | 3.4° | 2.3° | 4.1° |
| 600 mm | 911 mm | 2.3° | 1.5° | 2.7° |
| 800 mm | 1215 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 19.7 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 | 8.9 cm | 36.9 cm | 1.66 m | 4.60 m | 49.6 m | ∞ | 5.53 m |
| 14 mm | f/2.8 | 14.0 cm | 60.3 cm | 3.27 m | 17.4 m | ∞ | ∞ | 3.56 m |
| 14 mm | f/4 | 20.4 cm | 94.4 cm | 8.91 m | ∞ | ∞ | ∞ | 2.50 m |
| 14 mm | f/8 | 46.3 cm | 4.32 m | ∞ | ∞ | ∞ | ∞ | 1.25 m |
| 28 mm | f/1.8 | 2.1 cm | 8.8 cm | 36.1 cm | 82.4 cm | 2.38 m | 11.4 m | 22.1 m |
| 28 mm | f/2.8 | 3.3 cm | 13.8 cm | 56.7 cm | 1.32 m | 4.00 m | 27.8 m | 14.2 m |
| 28 mm | f/4 | 4.8 cm | 19.8 cm | 82.8 cm | 1.97 m | 6.69 m | ∞ | 9.95 m |
| 28 mm | f/8 | 9.6 cm | 40.7 cm | 1.89 m | 5.60 m | ∞ | ∞ | 4.99 m |
| 48 mm | f/1.8 | 0.7 cm | 2.9 cm | 12.1 cm | 27.4 cm | 76.9 cm | 3.15 m | 64.9 m |
| 48 mm | f/2.8 | 1.1 cm | 4.6 cm | 18.8 cm | 42.7 cm | 1.21 m | 5.07 m | 41.7 m |
| 48 mm | f/4 | 1.6 cm | 6.5 cm | 26.9 cm | 61.4 cm | 1.75 m | 7.72 m | 29.2 m |
| 48 mm | f/8 | 3.1 cm | 13.1 cm | 54.5 cm | 1.27 m | 3.84 m | 25.5 m | 14.6 m |
| 78 mm | f/1.8 | 0.2 cm | 1.1 cm | 4.5 cm | 10.2 cm | 28.8 cm | 1.16 m | 171 m |
| 78 mm | f/2.8 | 0.4 cm | 1.7 cm | 7.0 cm | 15.9 cm | 44.8 cm | 1.82 m | 110 m |
| 78 mm | f/4 | 0.5 cm | 2.4 cm | 10.0 cm | 22.8 cm | 64.2 cm | 2.62 m | 77.1 m |
| 78 mm | f/8 | 1.1 cm | 4.8 cm | 20.0 cm | 45.8 cm | 1.30 m | 5.52 m | 38.6 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 6.12 µm pixels, diffraction starts to soften pixel-level detail around f/9.1. For maximum sharpness keep landscapes between f/5.0 and f/9; stopping down further trades detail for depth of field.
| Aperture | Airy disk diameter | Spread over | At 100% view |
|---|---|---|---|
| f/2.8 | 3.8 µm | 0.6 px | sharp |
| f/4 | 5.4 µm | 0.9 px | sharp |
| f/5.6 | 7.5 µm | 1.2 px | sharp |
| f/8 | 10.7 µm | 1.8 px | sharp |
| f/11 | 14.8 µm | 2.4 px | slight softening |
| f/16 | 21.5 µm | 3.5 px | visibly soft |
| f/22 | 29.5 µm | 4.8 px | visibly soft |
Maximum print sizes#
At 10 MP the Ricoh GXR produces 3,873 × 2,582 pixel images. See the 10 megapixel guide or the print size calculator.
| Resolution | Typical use | Inches | Centimetres |
|---|---|---|---|
| 300 DPI | Photo-lab quality | 12.9 × 8.6 in | 33 × 22 cm |
| 240 DPI | Fine-art inkjet | 16.1 × 10.8 in | 41 × 27 cm |
| 200 DPI | Wall print | 19.4 × 12.9 in | 49 × 33 cm |
| 150 DPI | Poster, viewed from 1 m+ | 25.8 × 17.2 in | 66 × 44 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 |
|---|---|---|---|---|
| 9 mm (14 mm eq.) | 36.6 s | 27.4 s | 31.3 s | 36.0 s |
| 13 mm (20 mm eq.) | 25.3 s | 19.0 s | 21.7 s | 24.9 s |
| 16 mm (24 mm eq.) | 20.6 s | 15.4 s | 17.6 s | 20.2 s |
| 23 mm (35 mm eq.) | 14.3 s | 10.7 s | 12.2 s | 14.1 s |
| 33 mm (50 mm eq.) | 10.0 s | 7.5 s | 8.5 s | 9.8 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 |
| 66 mm | 1/100 s | 1/13 s | 0.3 s |
| 132 mm | 1/200 s | 1/25 s | 1/6 s |
Lens#
The Ricoh GXR 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 × 1.52.
Similar cameras#
Other APS-C cameras from around the same time.
- Nikon D7000 2010
- Pentax K-5 2010
- Nikon D60 2008
- Sony Alpha 65 2011
- Nikon D3000 2009
- Nikon D300S 2009
- Nikon D5000 2009
- Sony Alpha 230 2009
- Sony Alpha 500 2009
- Sony Alpha 550 2009
- Nikon D3100 2010
- Pentax K-r 2010
Frequently asked questions#
What is the crop factor of the Ricoh GXR?
The Ricoh GXR has a crop factor of 1.52× relative to 35 mm full frame (diagonal 28.5 mm vs 43.3 mm).
What size is the Ricoh GXR sensor?
23.7 × 15.8 mm (APS-C), an area of 374 mm² — 43% of full frame.
Is the Ricoh GXR full frame?
No — its sensor is APS-C, which is 2.3× smaller in area than full frame.
How many megapixels does the Ricoh GXR have?
10 megapixels (3,873 × 2,582 pixels), enough for a 13 × 9 inch print at 300 DPI.
How long can I expose the night sky with the Ricoh GXR?
With a 13 mm lens (20 mm equivalent) the 500 rule gives 25 s and the stricter NPF rule at f/2.8 gives 22 s.
Sources & licences#
- Wikipedia: Ricoh GXR — CC BY-SA 4.0
- Wikidata Q11347936 — CC0
- openMVG sensor width database — MPL-2.0
Last updated October 03, 2026 · How we calculate · Sources