Standard zoom · Four Thirds

Olympus M.Zuiko Digital ED 12-40mm f/2.8 Pro

The Olympus M.Zuiko Digital ED 12-40mm f/2.8 Pro is a four thirds zoom lens (12–40 mm, f/2.8) for Micro Four Thirds. It belongs to the standard zoom class — ideal for everyday shooting, travel, events and walkaround use.

12–40 mmf/2.8Micro Four Thirds
12–40 mm
Focal length
f/2.8
Maximum aperture
84°–30°
Diagonal angle of view (Four Thirds)
Four Thirds
Designed for
3.3×
Zoom ratio

Specifications#

Brand
Olympus
Model
M.Zuiko Digital ED 12-40mm f/2.8 Pro
Lens type
Standard zoom
Focal length
12–40 mm
Maximum aperture
f/2.8
Image circle
Four Thirds (17.3×13 mm)
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 12 mmAt 22 mmAt 40 mmEquiv. aperture (DoF)
Micro Four Thirds24 mm · 84°44 mm · 52°80 mm · 30°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: 14 mm f/2.8 on four thirds.

FocalApertureat 1 mat 2 mat 5 mat 10 mHyperfocalBlur @2 m
12 mmf/2.862.9 cm3.50 m∞∞3.44 m0.1%
12 mmf/499.2 cm10.6 m∞∞2.41 m0.1%
12 mmf/85.12 m∞∞∞1.21 m0.1%
22 mmf/2.817.1 cm70.8 cm5.31 m69.3 m11.5 m0.5%
22 mmf/424.6 cm1.04 m9.97 m∞8.09 m0.4%
22 mmf/851.5 cm2.58 m∞∞4.05 m0.2%
40 mmf/2.85.0 cm20.6 cm1.32 m5.61 m38.1 m1.7%
40 mmf/47.2 cm29.6 cm1.93 m8.68 m26.7 m1.2%
40 mmf/814.5 cm60.1 cm4.32 m33.8 m13.4 m0.6%

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 12 mmNPF at 12 mm, f/2.8
Micro Four Thirds1/80 s21 s16 s

Compatible cameras#

Bodies in our database with a native Micro Four Thirds mount.

Adapt it to other systems#

Sony E-mountNikon ZFujifilm X-mountCanon EF-MHasselblad XCDNikon 1 (CX)Pentax Q

Similar lenses#

Frequently asked questions#

Is the Olympus M.Zuiko Digital ED 12-40mm f/2.8 Pro full frame?

No — it is designed for Four Thirds sensors.

What is the Olympus M.Zuiko Digital ED 12-40mm f/2.8 Pro equivalent to on APS-C?

Its focal length is already the real value for Four Thirds: 12–40 mm frames like 24–80 mm on full frame.

What is the Olympus M.Zuiko Digital ED 12-40mm f/2.8 Pro good for?

As a standard zoom it suits everyday shooting, travel, events and walkaround use.

Sources & licences#

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