Key numbers
- Mount / system: Micro Four Thirds
- Sensor: Micro Four Thirds, 17.3 × 13mm
- Focal length: 45mm (about 90mm full-frame equivalent, 2.00× crop)
- Aperture: f/1.8 to f/22
- DoF at 3 m, 45mm, f/1.8: 2.89–3.12 m (≈ 23 cm deep)
- Hyperfocal distance (45mm, f/8): 17.6 m
Depth of field table
Distances are measured from the sensor plane. Each cell shows the near and far limit of acceptable sharpness in metres (∞ = to infinity). Circle of confusion = sensor diagonal / 1500.
| Aperture | Hyperfocal | 1 m | 2 m | 3 m | 5 m | 10 m |
|---|---|---|---|---|---|---|
| f/1.8 | 78.0 m | 0.99–1.01 | 1.95–2.05 | 2.89–3.12 | 4.70–5.34 | 8.87–11.5 |
| f/2 | 70.2 m | 0.99–1.01 | 1.95–2.06 | 2.88–3.13 | 4.67–5.38 | 8.76–11.7 |
| f/2.8 | 50.2 m | 0.98–1.02 | 1.92–2.08 | 2.83–3.19 | 4.55–5.55 | 8.34–12.5 |
| f/4 | 35.1 m | 0.97–1.03 | 1.89–2.12 | 2.77–3.28 | 4.38–5.82 | 7.79–14.0 |
| f/5.6 | 25.1 m | 0.96–1.04 | 1.86–2.17 | 2.68–3.40 | 4.18–6.23 | 7.16–16.6 |
| f/8 | 17.6 m | 0.95–1.06 | 1.80–2.25 | 2.57–3.61 | 3.90–6.96 | 6.39–23.0 |
| f/11 | 12.8 m | 0.93–1.08 | 1.74–2.36 | 2.44–3.90 | 3.61–8.16 | 5.63–44.9 |
| f/16 | 8.82 m | 0.90–1.12 | 1.64–2.57 | 2.25–4.51 | 3.20–11.4 | 4.70–∞ |
| f/22 | 6.43 m | 0.87–1.17 | 1.53–2.87 | 2.05–5.55 | 2.82–21.9 | 3.92–∞ |
FAQ
What is the depth of field of the Olympus M.Zuiko 45mm F1.8 at f/1.8 and 3 m?
At 45mm, f/1.8 and focus at 3 m, acceptable sharpness runs from 2.89 to 3.12 m — about 23 cm in total.
What is the hyperfocal distance of the Olympus M.Zuiko 45mm F1.8?
At 45mm and f/8 on a Micro Four Thirds sensor the hyperfocal distance is about 17.6 m. Focus there and everything from 8.80 m to infinity is sharp.
How do I get more background blur with the Olympus M.Zuiko 45mm F1.8?
Open the aperture to f/1.8, move closer to your subject and increase the distance between subject and background. You can check the result in the calculator above.