Sigma 17mm F4 DG DN | Contemporary 023 Specs & DoF

17 mm

Focal length

f/4

Maximum aperture

104°

Diagonal angle of view (Full frame)

Full frame

Designed for

Specifications#

Brand: Sigma
Model: 17mm F4 DG DN | Contemporary 023
Lens type: Ultra-wide prime
Focal length: 17 mm
Maximum aperture: f/4
Image circle: Full frame (36×24 mm)
Mount(s): L-Mount, Sony E-mount
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 17 mm	Equiv. aperture (DoF)
Full frame	17 mm · 104°	f/4.0
APS-C	26 mm · 79°	f/6.0
APS-C (Canon)	27 mm · 77°	f/6.4
Micro Four Thirds	34 mm · 65°	f/8.0

Depth of field & background blur#

Computed on its native Full frame format (CoC 30 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: 16 mm f/4 on full frame.

Focal	Aperture	at 1 m	at 2 m	at 5 m	at 10 m	Hyperfocal	Blur @2 m
17 mm	f/4	98.0 cm	10.2 m	∞	∞	2.43 m	0.1%
17 mm	f/8	4.89 m	∞	∞	∞	1.22 m	0.1%

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).

Body	Min. handheld shutter (longest focal)	500 rule at 17 mm	NPF at 17 mm, f/4
Full frame	1/15 s	29 s	19 s
APS-C	1/25 s	20 s	15 s
APS-C (Canon)	1/25 s	18 s	15 s
Micro Four Thirds	1/30 s	15 s	14 s

Compatible cameras#

Bodies in our database with a native L-Mount and Sony E-mount 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

Similar lenses#

Samyang AF 18mm f/2.8 f/2.8
Zeiss Batis 18mm f/2.8 f/2.8
Zeiss Distagon 18mm f/4 f/4
Sony FE 16mm f/1.8 G f/1.8
Viltrox AF 16mm F1.8 FE/L/Z f/1.8
Sigma 19mm f/2.8 DN f/2.8
Sigma 19mm f/2.8 EX DN f/2.8
Laowa 15mm f/2.0 Zero-D f/2
Viltrox AF 15mm F1.7 Air f/1.7
Voigtländer 15mm F4.5 Super Wide Heliar Aspherical III f/4.5
Sony FE 20mm f/1.8 G f/1.8
Samyang 20mm f/1.8 ED AS UMC f/1.8

Frequently asked questions#

Is the Sigma 17mm F4 DG DN | Contemporary 023 full frame?

Yes — it covers the full 36 × 24 mm frame.

What is the Sigma 17mm F4 DG DN | Contemporary 023 equivalent to on APS-C?

On a 1.5× APS-C body it frames like 26 mm, and like 27 mm on Canon APS-C.

What is the Sigma 17mm F4 DG DN | Contemporary 023 good for?

As a ultra-wide prime it suits astrophotography, landscapes and dramatic perspectives.

Sources & licences#

Lensfun lens database — CC BY-SA 3.0