Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k

$339
18-125 mm
autofocus 6.9x zoom lens
f/3.8-5.6
variable aperture Sigma OS Image stabilized Sigma HSM Built in focus motor

reviewswhat are people saying


Rated 5 out of 5 stars by 1 users at B&H Photo Video

"Lens has excellent speed and sharpness."

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.

horizontal angle of view
66.7 - 10.8°
27.5-190mm
35mm equivalent focal length

Pros

The Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs other Pentax K lenses

	Silent focus motor
	Silent and fast

	More advanced image stabilization
	Sigma OS

	Great zoom range
	6.9x

Cons

The Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs other Pentax K lenses

	Variable aperture
	Narrower aperture at longer focal lengths

	Narrow aperture
	f/3.8

	Zoom lens
	Typically not as sharp as prime lenses

	Low max f/stop
	f/5.6

The Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs other Pentax K travel lenses

	Poor zoom range
	6.9x

Specifications

General

	Min focal length	18 mm
	Max focal length	125 mm
	Zoom range	6.9x	above average
	Magnification	1:3.8 (0.3x)
Aperture

	Wide minimum	f/3.8	below average
	Wide maximum	f/5.6	below average
	Tele minimum	f/5.6	below average
	Tele maximum	f/5.6	below average
Features

	Auto focus	Yes
	Focus motor	Sigma HSM	above average
	Image stabilization	Sigma OS	above average
	Fisheye	No
	Tilt-shift	No
Form factor

	Lens mount	Pentax K
	Length	Unknown
	Diameter	74 mm
	Filter size	67 mm
	Weight	0.5 kg
Angle of view

	Wide horizontal	66.5°
	Telephoto horizontal	10.8°	above average
	Wide vertical	47.1°
	Telephoto vertical	7.2°	above average
	Wide diagonal	76.4°
	Telephoto diagonal	12.9°	above average

DiscussionWhat do you think about the Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k lens?

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Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k

reviewswhat are people saying

compatibilitywith digital cameras

APS-C (1.5x crop factor)

Pros

The Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs other Pentax K lenses

Cons

The Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs other Pentax K lenses

The Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs other Pentax K travel lenses

Specifications

General

Aperture

Features

Form factor

Angle of view

DiscussionWhat do you think about the Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k lens?

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