Specifications#
- Brand
- Olympus
- Model
- Zuiko Digital 25mm f/2.8
- Lens type
- Standard prime
- Focal length
- 25 mm
- Maximum aperture
- f/2.8
- Image circle
- Four Thirds (17.3×13 mm)
- Mount(s)
- Four Thirds
- Projection
- Rectilinear
- Lensfun correction profile
- Yes — distortion/vignetting/TCA
Equivalent focal length on different cameras#
Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).
| Camera format | At 25 mm | Equiv. aperture (DoF) |
|---|---|---|
| Micro Four Thirds | 50 mm · 47° | f/5.6 |
Depth of field & background blur#
Computed on its native Four Thirds format (CoC 15 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 24 mm f/2.8 on four thirds.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 25 mm | f/2.8 | 13.2 cm | 54.1 cm | 3.77 m | 24.4 m | 14.9 m | 0.7% |
| 25 mm | f/4 | 18.9 cm | 78.7 cm | 6.19 m | 232 m | 10.4 m | 0.5% |
| 25 mm | f/8 | 38.8 cm | 1.77 m | 110 m | ∞ | 5.23 m | 0.2% |
Handheld & night-sky limits#
NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).
| Body | Min. handheld shutter (longest focal) | 500 rule at 25 mm | NPF at 25 mm, f/2.8 |
|---|---|---|---|
| Micro Four Thirds | 1/50 s | 10 s | 8 s |
Compatible cameras#
Bodies in our database with a native Four Thirds mount.
- Olympus E-5 2010
- Olympus E-620 2009
- Olympus E-30 2008
- Olympus E-420 2008
- Olympus E-520 2008
- Olympus E-410 2007
- Panasonic Lumix DMC-L10 2007
- Olympus E-3 2007
- Olympus E-330 2006
- Olympus E-400 2006
- Panasonic Lumix DMC-L1 2006
- Olympus E-500 2005
- Olympus E-300 2005
- Olympus E-1 2003
- Olympus E-450
- Olympus E-510
Adapt it to other systems#
Similar lenses#
Frequently asked questions#
Is the Olympus Zuiko Digital 25mm f/2.8 full frame?
No — it is designed for Four Thirds sensors.
What is the Olympus Zuiko Digital 25mm f/2.8 equivalent to on APS-C?
Its focal length is already the real value for Four Thirds: 25 mm frames like 50 mm on full frame.
What is the Olympus Zuiko Digital 25mm f/2.8 good for?
As a standard prime it suits street, documentary, everyday and low-light shooting.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources