Sigma 14mm f/1.8 DG HSM Art vs Samyang 14mm T3.1 VDSLR ED AS IF UMC II

Both are Pentax K prime lenses for full frame. Here is what actually differs.

Sigma · 2017

14mm f/1.8 DG HSM Art

f/1.8HSM

Full specs

Samyang

14mm T3.1 VDSLR ED AS IF UMC II

f/3.1MF

Full specs

Pick the Sigma 14mm f/1.8 DG HSM Art if

You need 1½ stops more light for low light or background blur (f/1.8 vs f/3.1)
You want autofocus (HSM): the Samyang 14mm T3.1 VDSLR ED AS IF UMC II is manual focus only

Pick the Samyang 14mm T3.1 VDSLR ED AS IF UMC II if

Our spec data shows no clear advantage for this lens.

Spec differences

10 differences

Specifications that differ between the Sigma 14mm f/1.8 DG HSM Art and the Samyang 14mm T3.1 VDSLR ED AS IF UMC II
	Sigma 14mm f/1.8 DG HSM Art	Samyang 14mm T3.1 VDSLR ED AS IF UMC II
Brand	Sigma	Samyang
Max aperture	f/1.8 1½ stops faster	f/3.1
Length	126 mm	not listed
Diameter	95.4 mm	not listed
Min focus distance	0.27 m closer	0.28 m
Max magnification	0.1×	not listed
Aperture blades	9	not listed
Optical design	16 elements / 11 groups	14 elements / 10 groups
Autofocus motor	HSM	Manual focus
Released	2017	not listed

5 identical specs hidden: mount, type, format, focal length, image stabilization. Show all

Mount: Pentax K both
Type: Prime both
Format: Full frame both
Focal length: 14mm both
Image stabilization: No both

Our notes

Sigma 14mm f/1.8 DG HSM Art

The Sigma 14mm f/1.8 DG HSM Art is a full-frame fast wide-angle prime lens covering 14mm at f/1.8 for Pentax K mount cameras, from the Sigma Art line with Hyper Sonic Motor autofocus. A wide-aperture wide-angle prime from Sigma's Art line, popular for astrophotography and land...

Our notes