Sigma 10mm f/2.8 EX DC HSM Fisheye vs Samyang 10mm T3.1 VDSLR ED AS NCS CS II

Both are Pentax K lenses for APS-C. Here is what actually differs.

Sigma

10mm f/2.8 EX DC HSM Fisheye

f/2.8HSM

Full specs

Samyang

10mm T3.1 VDSLR ED AS NCS CS II

f/3.1MF

Full specs

Pick the Sigma 10mm f/2.8 EX DC HSM Fisheye if

You need ⅓ stop more light for low light or background blur (f/2.8 vs f/3.1)
You want autofocus (HSM): the Samyang 10mm T3.1 VDSLR ED AS NCS CS II is manual focus only
You shoot close-ups: it focuses down to 0.14 m vs 0.24 m

Pick the Samyang 10mm T3.1 VDSLR ED AS NCS CS II if

Our spec data shows no clear advantage for this lens.

Spec differences

9 differences

Specifications that differ between the Sigma 10mm f/2.8 EX DC HSM Fisheye and the Samyang 10mm T3.1 VDSLR ED AS NCS CS II
	Sigma 10mm f/2.8 EX DC HSM Fisheye	Samyang 10mm T3.1 VDSLR ED AS NCS CS II
Brand	Sigma	Samyang
Type	Fisheye	Prime
Max aperture	f/2.8 ⅓ stop faster	f/3.1
Diameter	not listed	87 mm
Min focus distance	0.14 m closer	0.24 m
Max magnification	0.3×	not listed
Aperture blades	7	not listed
Optical design	12 elements / 7 groups	14 elements / 9 groups
Autofocus motor	HSM	Manual focus

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

Mount: Pentax K both
Format: APS-C both
Focal length: 10mm both
Image stabilization: No both

Our notes

Sigma 10mm f/2.8 EX DC HSM Fisheye

The Sigma 10mm f/2.8 EX DC HSM Fisheye is an APS-C fisheye lens covering 10mm at f/2.8 for Pentax K mount cameras, with Hyper Sonic Motor autofocus. It suits dramatic perspectives, astrophotography and creative wide-field work.

Our notes