Wide-angle zoom · Four Thirds

Olympus Zuiko Digital ED 9-18mm f/4.0-5.6

The Olympus Zuiko Digital ED 9-18mm f/4.0-5.6 is a four thirds zoom lens (9–18 mm, f/4–5.6) for Four Thirds. It belongs to the wide-angle zoom class — ideal for landscapes, architecture, interiors and astrophotography.

9–18 mmf/4–5.6Four Thirds
9–18 mm
Focal length
f/4–5.6
Maximum aperture
100°–62°
Diagonal angle of view (Four Thirds)
Four Thirds
Designed for
2.0×
Zoom ratio

Specifications#

Brand
Olympus
Model
Zuiko Digital ED 9-18mm f/4.0-5.6
Lens type
Wide-angle zoom
Focal length
9–18 mm
Maximum aperture
f/4–5.6
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 formatAt 9 mmAt 13 mmAt 18 mmEquiv. aperture (DoF)
Micro Four Thirds18 mm · 100°26 mm · 80°36 mm · 62°f/8.0

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: 14 mm f/4 on four thirds.

FocalApertureat 1 mat 2 mat 5 mat 10 mHyperfocalBlur @2 m
9 mmf/43.19 m∞∞∞1.36 m0.1%
9 mmf/8∞∞∞∞68.4 cm0.0%
13 mmf/479.9 cm5.62 m∞∞2.83 m0.1%
13 mmf/82.76 m∞∞∞1.42 m0.1%
18 mmf/437.6 cm1.70 m62.2 m∞5.42 m0.2%
18 mmf/883.9 cm6.37 m∞∞2.72 m0.1%

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).

BodyMin. handheld shutter (longest focal)500 rule at 9 mmNPF at 9 mm, f/4
Micro Four Thirds1/40 s28 s27 s

Adapt it to other systems#

Frequently asked questions#

Is the Olympus Zuiko Digital ED 9-18mm f/4.0-5.6 full frame?

No — it is designed for Four Thirds sensors.

What is the Olympus Zuiko Digital ED 9-18mm f/4.0-5.6 equivalent to on APS-C?

Its focal length is already the real value for Four Thirds: 9–18 mm frames like 18–36 mm on full frame.

What is the Olympus Zuiko Digital ED 9-18mm f/4.0-5.6 good for?

As a wide-angle zoom it suits landscapes, architecture, interiors and astrophotography.

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources

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