Wide-angle zoom · Full frame

Sigma 15-30mm f/3.5-4.5 EX DG Aspherical

The Sigma 15-30mm f/3.5-4.5 EX DG Aspherical is a full frame zoom lens (15–30 mm, f/3.5–4.5) for Sigma SA, Canon EF, Sony / Minolta A-mount, Nikon F and Pentax K. It belongs to the wide-angle zoom class — ideal for landscapes, architecture, interiors and astrophotography.

15–30 mmf/3.5–4.5Sigma SACanon EFSony / Minolta A-mount
15–30 mm
Focal length
f/3.5–4.5
Maximum aperture
111°–72°
Diagonal angle of view (Full frame)
Full frame
Designed for
2.0×
Zoom ratio

Specifications#

Brand
Sigma
Model
15-30mm f/3.5-4.5 EX DG Aspherical
Lens type
Wide-angle zoom
Focal length
15–30 mm
Maximum aperture
f/3.5–4.5
Image circle
Full frame (36×24 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 15 mmAt 21 mmAt 30 mmEquiv. aperture (DoF)
Full frame15 mm · 111°21 mm · 92°30 mm · 72°f/3.5
APS-C22 mm · 86°32 mm · 68°45 mm · 50°f/5.2
APS-C (Canon)24 mm · 84°34 mm · 65°48 mm · 48°f/5.6
Micro Four Thirds30 mm · 72°42 mm · 55°60 mm · 40°f/7.0

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.

FocalApertureat 1 mat 2 mat 5 mat 10 mHyperfocalBlur @2 m
15 mmf/3.51.17 m26.1 m∞∞2.16 m0.1%
15 mmf/41.45 m∞∞∞1.89 m0.1%
15 mmf/8∞∞∞∞95.2 cm0.0%
21 mmf/3.549.3 cm2.42 m∞∞4.22 m0.2%
21 mmf/457.3 cm3.03 m∞∞3.70 m0.2%
21 mmf/81.49 m∞∞∞1.86 m0.1%
30 mmf/3.522.9 cm97.1 cm8.74 m∞8.60 m0.4%
30 mmf/426.3 cm1.13 m11.8 m∞7.53 m0.3%
30 mmf/855.4 cm2.90 m∞∞3.78 m0.2%

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).

BodyMin. handheld shutter (longest focal)500 rule at 15 mmNPF at 15 mm, f/3.5
Full frame1/30 s33 s20 s
APS-C1/50 s22 s16 s
APS-C (Canon)1/50 s21 s16 s
Micro Four Thirds1/60 s17 s15 s

Adapt it to other systems#

Frequently asked questions#

Is the Sigma 15-30mm f/3.5-4.5 EX DG Aspherical full frame?

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

What is the Sigma 15-30mm f/3.5-4.5 EX DG Aspherical equivalent to on APS-C?

On a 1.5× APS-C body it frames like 22–45 mm, and like 24–48 mm on Canon APS-C.

What is the Sigma 15-30mm f/3.5-4.5 EX DG Aspherical good for?

As a wide-angle zoom it suits landscapes, architecture, interiors and astrophotography.

Sources & licences#

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