Wide aperture

Camera
Pentax K20D

Lens category

Focus motor

Pentax K20D Lenses that have a focus motor and have a f/1.8 or faster aperture

#1	Sigma 50mm f/1.4 EX DG HSM Pentax-k

$499

"I have been very satisfied: this lens is absolutely great for low light, or portraiture, requiring large apertures. I shoot with a Pentax k-x, non full-frame, and so the focal length is closer to 85 mm, perfect for portraits."

Aperture	f/1.4	Weight	0.5 kg

Focus motor	Sigma HSM	Length	68 mm

Min focal length	50 mm	Diameter	85 mm

Max focal length	50 mm	Auto focus	Yes

#2	Pentax SMC 55mm f/1.4 DA* SDM

$797

"This lens produces an accurate reproduction. The f/1.4 aperature has opened-up a whole new range of photo oppurtunities."

Aperture	f/1.4	Weight	375 g

Focus motor	Pentax SDM	Length	n/a

Min focal length	55 mm	Diameter	n/a

Max focal length	55 mm	Auto focus	Yes

#3	Sigma 35mm f/1.4 DG HSM A1 Pentax-k

$899

Aperture	f/1.4	Weight	0.7 kg

Focus motor	Sigma HSM	Length	n/a

Min focal length	35 mm	Diameter	n/a

Max focal length	35 mm	Auto focus	Yes

#4	Sigma 85mm f/1.4 EX DG HSM Pentax-k

$899

Aperture	f/1.4	Weight	n/a

Focus motor	Sigma HSM	Length	n/a

Min focal length	85 mm	Diameter	n/a

Max focal length	85 mm	Auto focus	Yes

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Pentax K20D Lenses that have a focus motor and have a f/1.8 or faster aperture

Brand

Category

Price

Wide angle

Focus motor

Type

Sigma 50mm f/1.4 EX DG HSM Pentax-k

Pentax SMC 55mm f/1.4 DA* SDM

Sigma 35mm f/1.4 DG HSM A1 Pentax-k

Sigma 85mm f/1.4 EX DG HSM Pentax-k