Wide angle focal length

Wide aperture

Lens category

Lens mount

Pentax K Landscape lenses that are 10mm or wider and have a f/4 or faster aperture

#1	Rokinon 10mm f/2.8 ED AS NCS CS Pentax K

Rokinon 10mm f/2.8 ED AS NCS CS Pentax K

Aperture	f/2.8	Zoom range	1x

Min focal length	10 mm	Diameter	86 mm

Auto focus	No	Length	78 mm

Fixed aperture	n/a	Weight	0.6 kg

#2	Samyang 10mm f/2.8 ED AS NCS CS Pentax K

Samyang 10mm f/2.8 ED AS NCS CS Pentax K

Aperture	f/2.8	Zoom range	1x

Min focal length	10 mm	Diameter	86 mm

Auto focus	No	Length	105 mm

Fixed aperture	n/a	Weight	0.6 kg

#3	Sigma 10-20mm f/3.5 EX DC HSM Pentax K

"This lens is absolutely great for scenery and landscape. I did a lot of research for a good wide-angle lens and for the price this lens was definitely my favorite." bhphotovideo.com

	Fixed aperture
	The same maximum aperture at all focal lengths

	Supports autofocus
	Easier to use

Aperture	f/3.5	Zoom range	2x

Min focal length	10 mm	Diameter	86 mm

Auto focus	Yes	Length	89 mm

Fixed aperture	Yes	Weight	0.5 kg

See 50 sample photos taken with the Sigma 10-20mm f/3.5 EX DC HSM Pentax K

#4	Sigma 10-20mm f/4-5.6 EX DC J Pentax K

	Supports autofocus
	Easier to use

Aperture	f/4	Zoom range	2x

Min focal length	10 mm	Diameter	86 mm

Auto focus	Yes	Length	89 mm

Fixed aperture	No	Weight	0.5 kg

See 50 sample photos taken with the Sigma 10-20mm f/4-5.6 EX DC J Pentax K

#5	Tamron SP 10-24mm f/3.5-4.5 DI II Pentax K

Tamron SP 10-24mm f/3.5-4.5 DI II Pentax K

"Nice to have a lens that will work as a fish eye AND a regular wide angle. I took some fun pictures this weekend and was very pleased with the results." bhphotovideo.com

	Supports autofocus
	Easier to use

Aperture	f/3.5	Zoom range	2.4x

Min focal length	10 mm	Diameter	79 mm

Auto focus	Yes	Length	99 mm

Fixed aperture	No	Weight	406 g

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Pentax K Landscape lenses that are 10mm or wider and have a f/4 or faster aperture

Brand

Category

Lens mounts

Price

Aperture

Wide angle

Telephoto

Image stabilization

Focus motor

Type

Rokinon 10mm f/2.8 ED AS NCS CS Pentax K

Samyang 10mm f/2.8 ED AS NCS CS Pentax K

Sigma 10-20mm f/3.5 EX DC HSM Pentax K

Sigma 10-20mm f/4-5.6 EX DC J Pentax K

Tamron SP 10-24mm f/3.5-4.5 DI II Pentax K