Specifications#
- Brand
- Olympus
- Model
- OM-D E-M10 Mark IV
- Also known as
- E-M10 IV, E-M10MarkIV
- Camera type
- Mirrorless
- Released
- 2020-09-18
- Lens mount
- Micro Four Thirds
- Sensor size
- 17.4 × 13.0 mm (Four Thirds / Micro Four Thirds)
- Crop factor
- 1.99×
- Resolution
- 20.3 MP (5,213 × 3,894 px)
- Weight
- 335 g (11.8 oz)
- Sensor
- 20.3 Megapixel
- Sensor type
- Live MOS
- Flash
- built-in flash, hot-shoe on the body
- Dimensions
- 121.7 x 84.4 x 49mm
- Lens
- Interchangeable, Micro Four Thirds mount
- Predecessor
- Olympus OM-D E-M10 Mark III
- Launch price
- $699 (body only), $799 (with 14-42mm F3.5-5.6 EZ lens)
Specifications merged from Wikipedia, Wikidata and Lensfun. Spot an error? Tell us.
Sensor size compared#
Focal length equivalents & field of view#
Multiply any focal length by 1.99 to get the full-frame field of view. Angles are for a rectilinear lens focused at infinity.
| Lens on this camera | Full-frame equivalent | Horizontal | Vertical | Diagonal |
|---|---|---|---|---|
| 8 mm | 16 mm | 94.8° | 78.2° | 107.2° |
| 10 mm | 20 mm | 82.0° | 66.0° | 94.7° |
| 12 mm | 24 mm | 71.9° | 56.9° | 84.3° |
| 14 mm | 28 mm | 63.7° | 49.8° | 75.6° |
| 16 mm | 32 mm | 57.1° | 44.2° | 68.3° |
| 18 mm | 36 mm | 51.6° | 39.7° | 62.2° |
| 20 mm | 40 mm | 47.0° | 36.0° | 57.0° |
| 24 mm | 48 mm | 39.9° | 30.3° | 48.7° |
| 28 mm | 56 mm | 34.5° | 26.1° | 42.4° |
| 35 mm | 70 mm | 27.9° | 21.0° | 34.5° |
| 40 mm | 80 mm | 24.5° | 18.5° | 30.4° |
| 50 mm | 100 mm | 19.7° | 14.8° | 24.5° |
| 56 mm | 112 mm | 17.7° | 13.2° | 22.0° |
| 70 mm | 139 mm | 14.2° | 10.6° | 17.6° |
| 85 mm | 169 mm | 11.7° | 8.7° | 14.6° |
| 100 mm | 199 mm | 9.9° | 7.4° | 12.4° |
| 135 mm | 269 mm | 7.4° | 5.5° | 9.2° |
| 200 mm | 398 mm | 5.0° | 3.7° | 6.2° |
| 300 mm | 598 mm | 3.3° | 2.5° | 4.1° |
| 400 mm | 797 mm | 2.5° | 1.9° | 3.1° |
| 600 mm | 1195 mm | 1.7° | 1.2° | 2.1° |
Depth of field table#
Total depth of field at each subject distance, using a circle of confusion of 15.1 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 |
|---|---|---|---|---|---|---|---|---|
| 11 mm | f/1.8 | 11.1 cm | 46.6 cm | 2.22 m | 7.28 m | ∞ | ∞ | 4.47 m |
| 11 mm | f/2.8 | 17.6 cm | 78.2 cm | 5.34 m | ∞ | ∞ | ∞ | 2.88 m |
| 11 mm | f/4 | 25.9 cm | 1.30 m | 204 m | ∞ | ∞ | ∞ | 2.02 m |
| 11 mm | f/8 | 63.8 cm | 65.1 m | ∞ | ∞ | ∞ | ∞ | 1.02 m |
| 22 mm | f/1.8 | 2.7 cm | 11.0 cm | 44.9 cm | 1.03 m | 3.02 m | 16.3 m | 17.9 m |
| 22 mm | f/2.8 | 4.2 cm | 17.2 cm | 71.0 cm | 1.67 m | 5.34 m | 71.2 m | 11.5 m |
| 22 mm | f/4 | 6.0 cm | 24.7 cm | 1.05 m | 2.58 m | 10.1 m | ∞ | 8.06 m |
| 22 mm | f/8 | 12.1 cm | 51.8 cm | 2.60 m | 9.87 m | ∞ | ∞ | 4.04 m |
| 37 mm | f/1.8 | 0.9 cm | 3.8 cm | 15.6 cm | 35.3 cm | 99.2 cm | 4.11 m | 50.5 m |
| 37 mm | f/2.8 | 1.4 cm | 5.9 cm | 24.3 cm | 55.2 cm | 1.57 m | 6.78 m | 32.5 m |
| 37 mm | f/4 | 2.0 cm | 8.5 cm | 34.8 cm | 79.6 cm | 2.29 m | 10.9 m | 22.8 m |
| 37 mm | f/8 | 4.1 cm | 17.1 cm | 71.2 cm | 1.68 m | 5.40 m | 75.8 m | 11.4 m |
| 62 mm | f/1.8 | 0.3 cm | 1.3 cm | 5.5 cm | 12.4 cm | 34.9 cm | 1.41 m | 142 m |
| 62 mm | f/2.8 | 0.5 cm | 2.1 cm | 8.5 cm | 19.4 cm | 54.3 cm | 2.21 m | 91.2 m |
| 62 mm | f/4 | 0.7 cm | 2.9 cm | 12.2 cm | 27.7 cm | 77.9 cm | 3.19 m | 63.9 m |
| 62 mm | f/8 | 1.4 cm | 5.9 cm | 24.4 cm | 55.7 cm | 1.59 m | 6.90 m | 32.0 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 3.34 µm pixels, diffraction starts to soften pixel-level detail around f/5.0. For maximum sharpness keep landscapes between f/2.8 and f/5; stopping down further trades detail for depth of field.
| Aperture | Airy disk diameter | Spread over | At 100% view |
|---|---|---|---|
| f/2.8 | 3.8 µm | 1.1 px | sharp |
| f/4 | 5.4 µm | 1.6 px | sharp |
| f/5.6 | 7.5 µm | 2.3 px | slight softening |
| f/8 | 10.7 µm | 3.2 px | visibly soft |
| f/11 | 14.8 µm | 4.4 px | visibly soft |
| f/16 | 21.5 µm | 6.4 px | visibly soft |
| f/22 | 29.5 µm | 8.8 px | visibly soft |
Maximum print sizes#
At 20.3 MP the Olympus OM-D E-M10 Mark IV produces 5,213 × 3,894 pixel images. See the 20 megapixel guide or the print size calculator.
| Resolution | Typical use | Inches | Centimetres |
|---|---|---|---|
| 300 DPI | Photo-lab quality | 17.4 × 13.0 in | 44 × 33 cm |
| 240 DPI | Fine-art inkjet | 21.7 × 16.2 in | 55 × 41 cm |
| 200 DPI | Wall print | 26.1 × 19.5 in | 66 × 49 cm |
| 150 DPI | Poster, viewed from 1 m+ | 34.8 × 26.0 in | 88 × 66 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 |
|---|---|---|---|---|
| 7 mm (14 mm eq.) | 35.9 s | 23.3 s | 28.3 s | 34.3 s |
| 10 mm (20 mm eq.) | 25.1 s | 16.3 s | 19.8 s | 24.0 s |
| 12 mm (24 mm eq.) | 20.9 s | 13.6 s | 16.5 s | 20.0 s |
| 18 mm (36 mm eq.) | 13.9 s | 9.1 s | 11.0 s | 13.3 s |
| 25 mm (50 mm eq.) | 10.0 s | 6.5 s | 7.9 s | 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 |
|---|---|---|---|
| 12 mm | 1/25 s | 0.3 s | 1.3 s |
| 25 mm | 1/50 s | 1/6 s | 0.6 s |
| 50 mm | 1/100 s | 1/13 s | 0.3 s |
| 100 mm | 1/200 s | 1/25 s | 1/6 s |
Lenses for the Olympus OM-D E-M10 Mark IV#
Native Micro Four Thirds lenses in our database (100 total). Also adaptable: T-mount (T2), M39 / LTM (Leica thread), M42 screw mount, Deckel (DKL).
- Olympus M.Zuiko Digital ED 7-14mm f/2.8 Pro 7–14 mm
- Panasonic G Vario 7-14mm f/4.0 Asph. 7–14 mm
- Laowa 7.5mm f/2.0 7.5 mm
- Samyang 7.5mm f/3.5 UMC Fish-eye MFT 7.5 mm
- Olympus M.Zuiko Digital ED 8-25mm f/4.0 PRO 8–25 mm
- Olympus M.Zuiko Digital ED 8mm f/1.8 Fisheye Pro 8 mm
- Panasonic Leica DG Vario-Elmarit 8-18mm f/2.8-4 Asph. 8–18 mm
- Samyang 8mm f/3.5 Fish-Eye CS 8 mm
- Laowa 9mm f/2.8 Zero-D 9 mm
- Olympus M.Zuiko Digital ED 9-18mm f/4.0-5.6 9–18 mm
- Panasonic Leica DG Summilux 9mm f/1.7 Asph. 9 mm
- Panasonic Leica DG Vario-Summilux 10-25mm f/1.7 Asph. 10–25 mm
- Samyang 10mm f/2.8 ED AS NCS CS 10 mm
- OM System 12-100mm F4.0 12–100 mm
- OM System 12-45mm F4.0 12–45 mm
- Olympus M.Zuiko Digital ED 12-100mm f/4.0 IS Pro 12–100 mm
- Olympus M.Zuiko Digital ED 12-200mm f/3.5-6.3 12–200 mm
- Olympus M.Zuiko Digital ED 12-40mm f/2.8 Pro 12–40 mm
- Olympus M.Zuiko Digital ED 12-45mm f/4.0 Pro 12–45 mm
- Olympus M.Zuiko Digital ED 12-50mm f/3.5-6.3 EZ 12–50 mm
- Olympus M.Zuiko Digital ED 12mm f/2.0 12 mm
- Panasonic G Vario 12-32mm f/3.5-5.6 Asph. Mega OIS 12–32 mm
- Panasonic G Vario 12-60mm f/3.5-5.6 Asph. Power OIS 12–60 mm
- Panasonic G X Vario 12-35mm f/2.8 Asph. Power OIS 12–35 mm
- Panasonic G X Vario 12-35mm f/2.8 II Asph. Power OIS 12–35 mm
- Panasonic Leica DG Vario-Elmarit 12-60mm f/2.8-4.0 Asph. Power OIS 12–60 mm
- Samyang 12mm f/2.0 NCS CS 12 mm
- Olympus M.Zuiko Digital 14-42mm f/3.5-5.6 II 14–42 mm
- Olympus M.Zuiko Digital ED 14-150mm f/4.0-5.6 14–150 mm
- Olympus M.Zuiko Digital ED 14-150mm f/4.0-5.6 II 14–150 mm
- Olympus M.Zuiko Digital ED 14-42mm f/3.5-5.6 14–42 mm
- Olympus M.Zuiko Digital ED 14-42mm f/3.5-5.6 EZ 14–42 mm
- Olympus M.Zuiko Digital ED 14-42mm f/3.5-5.6 II R 14–42 mm
- Olympus M.Zuiko Digital ED 14-42mm f/3.5-5.6 L 14–42 mm
- Panasonic G 14mm f/2.5 Asph. 14 mm
- Panasonic G 14mm f/2.5 Asph. + GWC1 0.79× 14 mm
Similar cameras#
Other Four Thirds / Micro Four Thirds cameras from around the same time.
Frequently asked questions#
What is the crop factor of the Olympus OM-D E-M10 Mark IV?
The Olympus OM-D E-M10 Mark IV has a crop factor of 1.99× relative to 35 mm full frame (diagonal 21.7 mm vs 43.3 mm).
What size is the Olympus OM-D E-M10 Mark IV sensor?
17.4 × 13.0 mm (Four Thirds / Micro Four Thirds), an area of 226 mm² — 26% of full frame.
Is the Olympus OM-D E-M10 Mark IV full frame?
No — its sensor is Four Thirds / Micro Four Thirds, which is 3.8× smaller in area than full frame.
How many megapixels does the Olympus OM-D E-M10 Mark IV have?
20.3 megapixels (5,213 × 3,894 pixels), enough for a 17 × 13 inch print at 300 DPI.
What lens mount does the Olympus OM-D E-M10 Mark IV use?
The Olympus OM-D E-M10 Mark IV uses the Micro Four Thirds (flange distance 19.25 mm).
How long can I expose the night sky with the Olympus OM-D E-M10 Mark IV?
With a 10 mm lens (20 mm equivalent) the 500 rule gives 25 s and the stricter NPF rule at f/2.8 gives 20 s.
Sources & licences#
- Wikipedia: Olympus OM-D E-M10 Mark IV — CC BY-SA 4.0
- Wikidata Q98415129 — CC0
- Lensfun camera database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources