Olympus M.Zuiko Digital ED 45mm f/1.2 Pro Specs & DoF

45 mm

Focal length

f/1.2

Maximum aperture

27°

Diagonal angle of view (Four Thirds)

Four Thirds

Designed for

Specifications#

Brand: Olympus
Model: M.Zuiko Digital ED 45mm f/1.2 Pro
Lens type: Portrait / short tele prime
Focal length: 45 mm
Maximum aperture: f/1.2
Image circle: Four Thirds (17.3×13 mm)
Mount(s): Micro 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 45 mm	Equiv. aperture (DoF)
Micro Four Thirds	90 mm · 27°	f/2.4

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: 50 mm f/1.2 on four thirds.

Focal	Aperture	at 1 m	at 2 m	at 5 m	at 10 m	Hyperfocal	Blur @2 m
45 mm	f/1.2	1.7 cm	7.0 cm	44.1 cm	1.78 m	113 m	5.0%
45 mm	f/4	5.7 cm	23.3 cm	1.50 m	6.46 m	33.8 m	1.5%
45 mm	f/8	11.4 cm	47.0 cm	3.21 m	18.1 m	16.9 m	0.7%

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 45 mm	NPF at 45 mm, f/1.2
Micro Four Thirds	1/100 s	6 s	3 s

Compatible cameras#

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

Adapt it to other systems#

Sony E-mount Nikon Z Fujifilm X-mount Canon EF-M Hasselblad XCD Nikon 1 (CX)Pentax Q

Similar lenses#

Olympus M.Zuiko Digital 45mm f/1.8 f/1.8
Panasonic G 42.5mm f/1.7 Asph. Power OIS f/1.7
Panasonic Leica DG Nocticron 42.5mm f/1.2 Asph. Power OIS f/1.2
Sigma 56mm F1.4 DC DN | C 018 f/1.4
Samyang 85mm f/1.4 IF UMC Aspherical f/1.4
Samyang 135mm f/2 ED UMC f/2

Frequently asked questions#

Is the Olympus M.Zuiko Digital ED 45mm f/1.2 Pro full frame?

No — it is designed for Four Thirds sensors.

What is the Olympus M.Zuiko Digital ED 45mm f/1.2 Pro equivalent to on APS-C?

Its focal length is already the real value for Four Thirds: 45 mm frames like 90 mm on full frame.

What is the Olympus M.Zuiko Digital ED 45mm f/1.2 Pro good for?

As a portrait / short tele prime it suits head-and-shoulders portraits with flattering perspective and creamy backgrounds.

Sources & licences#

Lensfun lens database — CC BY-SA 3.0