Sigma 17-40mm f/1.8 DC vs Leica Vario-Elmarit-SL 24-70mm f/2.8 ASPH.

Both are Leica L zoom lenses. Here is what actually differs.

Sigma · 2025

17-40mm f/1.8 DC

f/1.8535 g

Full specs

Leica

Vario-Elmarit-SL 24-70mm f/2.8 ASPH.

f/2.8856 g

Full specs

Pick the Sigma 17-40mm f/1.8 DC if

You need 1⅓ stops more light for low light or background blur (f/1.8 vs f/2.8)
You want the lighter lens to carry: 321 g lighter (535 g vs 856 g)
You want a wider view: 17mm vs 24mm at the wide end

Pick the Leica Vario-Elmarit-SL 24-70mm f/2.8 ASPH. if

You need more reach: 70mm vs 40mm at the long end
You shoot full frame: the Sigma 17-40mm f/1.8 DC is made for APS-C

Spec differences

14 differences

Specifications that differ between the Sigma 17-40mm f/1.8 DC and the Leica Vario-Elmarit-SL 24-70mm f/2.8 ASPH.
	Sigma 17-40mm f/1.8 DC	Leica Vario-Elmarit-SL 24-70mm f/2.8 ASPH.
Brand	Sigma	Leica
Format	APS-C	Full frame
Focal length	17-40mm	24-70mm
Max aperture	f/1.8 1⅓ stops faster	f/2.8
Weight	535 g lighter	856 g
Length	115.9 mm	not listed
Diameter	72.9 mm	not listed
Filter thread	67 mm	not listed
Min focus distance	0.28 m	not listed
Max magnification	0.21×	not listed
Aperture blades	11	not listed
Optical design	17 elements / 11 groups	not listed
Weather sealing	Yes	not listed
Released	2025	not listed

3 identical specs hidden: mount, type, image stabilization. Show all

Mount: Leica L both
Type: Zoom both
Image stabilization: No both

Our notes

Sigma 17-40mm f/1.8 DC

A 17-40mm f/1.8 APS-C fast wide-angle zoom lens, the Sigma 17-40mm f/1.8 DC is designed for Leica L mount bodies. It covers wide angles for landscapes, interiors and architecture.

Our notes