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

Sigma 10-20mm f/4-5.6 EX DC Pentax-k
$479
10-20 mm
autofocus 2x zoom lens
f/4-5.6
variable aperture

reviewswhat are people saying

starstarstarstarstar
B&H Photo Video

Rated 4.5 out of 5 stars by 21 users at B&H Photo Video

"This is the lens I have been looking for all these years for nice architecture pictures."

"Awesome - gets the whole mountain scene in the photo. Light weight and very easy to focus with."

"The only point about this lens is the construction, it doesn't give me a solid feeling."

compatibilitywith digital cameras

APS-C (1.5x crop factor)

This lens is compatible with APS-C (1.5x crop factor) cameras such as the Pentax K-30, Pentax K-5 and Pentax K-5 II.

Pentax K-30
99.7 - 61.3°
horizontal angle of view
15-30.5mm
35mm equivalent focal length

Pros

Cons

The Sigma 10-20mm f/4-5.6 EX DC Pentax-k vs other Pentax K lenses

Fixed aperture Variable aperture Help
Narrower aperture at longer focal lengths
Magnification Poor macro Help
1:6.7 (0.1x)
Aperture Narrow aperture Help
f/4
Prime lens Zoom lens Help
Typically not as sharp as prime lenses
Max focal length Poor telephoto lens Help
20 mm
Focus motor Lacks a silent focus motor Help
Louder and slower

The Sigma 10-20mm f/4-5.6 EX DC Pentax-k vs other Pentax K wide angle lenses

Zoom range Below average zoom range Help
2x

Specifications

General

Min focal length
Help
10 mm
above average above average
Max focal length
Help
20 mm
below average below average
Zoom range
Help
2x
Magnification
Help
1:6.7 (0.1x)
below average below average

Aperture

Wide minimum
Help
f/4
below average below average
Wide maximum
Help
f/22
Tele minimum
Help
f/5.6
below average below average
Tele maximum
Help
f/22

Features

Auto focus
Help
Yes
Focus motor
Help
None
below average below average
Image stabilization
Help
None
Fisheye
Help
No
Tilt-shift
Help
No

Form factor

Lens mount
Help
Pentax K
Length
Help
81 mm
Diameter
Help
84 mm
Filter size
Help
77 mm
Weight
Help
470 g

Angle of view

Wide horizontal
Help
99.4°
above average above average
Telephoto horizontal
Help
61.1°
below average below average
Wide vertical
Help
76.3°
above average above average
Telephoto vertical
Help
42.9°
below average below average
Wide diagonal
Help
109.6°
above average above average
Telephoto diagonal
Help
70.6°
below average below average

DiscussionWhat do you think about the Sigma 10-20mm f/4-5.6 EX DC Pentax-k lens?

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