Wide aperture
Help
 
Camera
Help
Pentax K20D
Lens category
Help
Focus motor
Help
Pentax K20D

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

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."

Help
Aperture f/1.4
Help
Weight 0.5 kg
Help
Focus motor Sigma HSM
Help
Length 68 mm
Help
Min focal length 50 mm
Help
Diameter 85 mm
Help
Max focal length 50 mm
Help
Auto focus Yes
#2

Pentax SMC 55mm f/1.4 DA* SDM

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."

Help
Aperture f/1.4
Help
Weight 375 g
Help
Focus motor Pentax SDM
Help
Length n/a
Help
Min focal length 55 mm
Help
Diameter n/a
Help
Max focal length 55 mm
Help
Auto focus Yes
#3

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

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

$899

Help
Aperture f/1.4
Help
Weight 0.7 kg
Help
Focus motor Sigma HSM
Help
Length n/a
Help
Min focal length 35 mm
Help
Diameter n/a
Help
Max focal length 35 mm
Help
Auto focus Yes
#4

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

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

$899

Help
Aperture f/1.4
Help
Weight n/a
Help
Focus motor Sigma HSM
Help
Length n/a
Help
Min focal length 85 mm
Help
Diameter n/a
Help
Max focal length 85 mm
Help
Auto focus Yes