Sigma 56mm F1.4 DC DN | C 018 Specs & DoF

56 mm

Focal length

f/1.4

Maximum aperture

22°

Diagonal angle of view (Four Thirds)

Four Thirds

Designed for

Specifications#

Brand: Sigma
Model: 56mm F1.4 DC DN | C 018
Lens type: Portrait / short tele prime
Focal length: 56 mm
Maximum aperture: f/1.4
Image circle: Four Thirds (17.3×13 mm)
Mount(s): Micro Four Thirds, Sony E-mount, Fujifilm X-mount, L-Mount, Canon EF-M, Nikon Z
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 56 mm	Equiv. aperture (DoF)
Micro Four Thirds	112 mm · 22°	f/2.8

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/1.4 on four thirds.

Focal	Aperture	at 1 m	at 2 m	at 5 m	at 10 m	Hyperfocal	Blur @2 m
56 mm	f/1.4	1.3 cm	5.2 cm	33.2 cm	1.34 m	149 m	6.7%
56 mm	f/4	3.6 cm	14.9 cm	95.5 cm	3.95 m	52.3 m	2.3%
56 mm	f/8	7.2 cm	29.9 cm	1.96 m	8.90 m	26.2 m	1.2%

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 56 mm	NPF at 56 mm, f/1.4
Micro Four Thirds	1/125 s	4 s	3 s

Compatible cameras#

Bodies in our database with a native Micro Four Thirds, Sony E-mount, Fujifilm X-mount, L-Mount, Canon EF-M and Nikon Z mount.

Adapt it to other systems#

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

Similar lenses#

Fujifilm XF 56mm f/1.2 R f/1.2
Fujifilm XF 56mm f/1.2 R APD f/1.2
Fujifilm XF 56mm f/1.2 R WR f/1.2
Viltrox AF 56mm f/1.4 XF f/1.4
Fujifilm XF 50mm f/2 R WR f/2
Sony E 50mm f/1.8 OSS f/1.8
Zeiss Touit 2.8/50M f/2.8
Olympus M.Zuiko Digital 45mm f/1.8 f/1.8
Olympus M.Zuiko Digital ED 45mm f/1.2 Pro f/1.2
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
Samyang AF 75mm f/1.8 f/1.8

Frequently asked questions#

Is the Sigma 56mm F1.4 DC DN | C 018 full frame?

No — it is designed for Four Thirds sensors.

What is the Sigma 56mm F1.4 DC DN | C 018 equivalent to on APS-C?

Its focal length is already the real value for Four Thirds: 56 mm frames like 112 mm on full frame.

What is the Sigma 56mm F1.4 DC DN | C 018 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