Sigma 30mm f/1.4 EX DC HSM Specs, Equivalents & Depth of Field

30 mm

Focal length

f/1.4

Maximum aperture

50°

Diagonal angle of view (APS-C)

APS-C

Designed for

Specifications#

Brand: Sigma
Model: 30mm f/1.4 EX DC HSM
Lens type: Standard prime
Focal length: 30 mm
Maximum aperture: f/1.4
Image circle: APS-C (23.5×15.6 mm)
Mount(s): Sigma SA, Canon EF, Sony / Minolta A-mount, Nikon F, Pentax K, Four Thirds
Projection: Rectilinear
Autofocus motor: hypersonic (HSM)
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 30 mm	Equiv. aperture (DoF)
APS-C	45 mm · 50°	f/2.1
APS-C (Canon)	48 mm · 48°	f/2.2
Micro Four Thirds	60 mm · 40°	f/2.8

Depth of field & background blur#

Computed on its native APS-C format (CoC 20 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: 28 mm f/1.4 on aps-c.

Focal	Aperture	at 1 m	at 2 m	at 5 m	at 10 m	Hyperfocal	Blur @2 m
30 mm	f/1.4	5.9 cm	24.1 cm	1.55 m	6.68 m	32.9 m	1.4%
30 mm	f/4	17.0 cm	70.6 cm	5.31 m	69.6 m	11.5 m	0.5%
30 mm	f/8	34.7 cm	1.55 m	34.1 m	∞	5.78 m	0.2%

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 30 mm	NPF at 30 mm, f/1.4
APS-C	1/50 s	11 s	6 s
APS-C (Canon)	1/50 s	10 s	5 s
Micro Four Thirds	1/60 s	8 s	5 s

Compatible cameras#

Bodies in our database with a native Sigma SA, Canon EF, Sony / Minolta A-mount, Nikon F, Pentax K and Four Thirds mount. Full-frame bodies switch to an APS-C crop with this lens.