Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax-k

$1,599
50-500 mm
autofocus 10x zoom lens
f/4.5-6.3
variable aperture Sigma OS Image stabilized Sigma HSM Built in focus motor

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
26.7 - 2.7°
76-759.5mm
35mm equivalent focal length

Pros

The Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax-k vs other Pentax K lenses

	Excellent telephoto lens
	500 mm

	Huge zoom range
	10x

	Silent focus motor
	Silent and fast

	More advanced image stabilization
	Sigma OS

Cons

The Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax-k vs other Pentax K lenses

	Variable aperture
	Narrower aperture at longer focal lengths

	Quite heavy
	2 kg

	Narrow aperture
	f/4.5

	Zoom lens
	Typically not as sharp as prime lenses

	Quite long
	218 mm

Specifications

General

	Min focal length	50 mm
	Max focal length	500 mm	unique
	Zoom range	10x	unique
	Magnification	Unknown
Aperture

	Wide minimum	f/4.5	below average
	Wide maximum	f/22
	Tele minimum	f/6.3	below average
	Tele maximum	f/22
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	218 mm	below average
	Diameter	104 mm
	Filter size	95 mm
	Weight	2 kg	below average
Angle of view

	Wide horizontal	26.6°	below average
	Telephoto horizontal	2.7°	above average
	Wide vertical	17.8°	below average
	Telephoto vertical	1.8°	above average
	Wide diagonal	31.7°	below average
	Telephoto diagonal	3.2°	above average

DiscussionWhat do you think about the Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax-k lens?

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Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax-k

compatibilitywith digital cameras

APS-C (1.5x crop factor)

Pros

The Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax-k vs other Pentax K lenses

Cons

The Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax-k vs other Pentax K lenses

Specifications

General

Aperture

Features

Form factor

Angle of view

DiscussionWhat do you think about the Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax-k lens?

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