Sigma 17-40mm f/1.8 DC vs Samyang AF 35-150mm f/2-2.8

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

Samyang

AF 35-150mm f/2-2.8

f/2Linear motor

Check price Full specs

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

You need ⅓ stop more light for low light or background blur (f/1.8 vs f/2)
You want a wider view: 17mm vs 35mm at the wide end
You shoot close-ups: it focuses down to 0.28 m vs 0.32 m
You want a compact lens: 115.9 mm vs 155.4 mm long

Pick the Samyang AF 35-150mm f/2-2.8 if

You need more reach: 150mm 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 Samyang AF 35-150mm f/2-2.8
	Sigma 17-40mm f/1.8 DC	Samyang AF 35-150mm f/2-2.8
Brand	Sigma	Samyang
Format	APS-C	Full frame
Focal length	17-40mm	35-150mm
Max aperture	f/1.8 ⅓ stop faster	f/2
Weight	535 g	not listed
Length	115.9 mm shorter	155.4 mm
Diameter	72.9 mm slimmer	92.8 mm
Filter thread	67 mm	82 mm
Min focus distance	0.28 m closer	0.32 m
Max magnification	0.21×	not listed
Aperture blades	11	not listed
Optical design	17 elements / 11 groups	21 elements / 18 groups
Autofocus motor	not listed	Linear motor
Released	2025	not listed

4 identical specs hidden: mount, type, image stabilization, weather sealing. Show all

Mount: Leica L both
Type: Zoom both
Image stabilization: No both
Weather sealing: Yes 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