Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha

$999
120-400 mm
autofocus 3.3x zoom lens
f/4.5-5.6
variable aperture Sigma OS Image stabilized Sigma HSM Built in focus motor

compatibilitywith digital cameras

Full frame

This lens is compatible with Full frame cameras such as the Sony SLT-A99.

horizontal angle of view
17 - 5.1°
120-400mm
35mm equivalent focal length

APS-C (1.5x crop factor)

This lens is compatible with APS-C (1.5x crop factor) cameras such as the Sony SLT A57, Sony SLT A58 and Sony SLT-A55.

horizontal angle of view
11.2 - 3.4°
184-613mm
35mm equivalent focal length

Pros

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha vs other Sony Alpha (Full-frame) lenses

	Excellent telephoto lens
	400 mm

	More advanced image stabilization
	Sigma OS

	Silent focus motor
	Silent and fast

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha vs other Sony Alpha (Full-frame) wildlife lenses

	Inexpensive
	$999.00

	Great wide angle lens
	120 mm

Cons

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha vs other Sony Alpha (Full-frame) lenses

	Variable aperture
	Narrower aperture at longer focal lengths

	Quite heavy
	1.8 kg

	Zoom lens
	Typically not as sharp as prime lenses

	Narrow aperture
	f/4.5

Specifications

General

	Min focal length	120 mm	below average
	Max focal length	400 mm	unique
	Zoom range	3.3x
	Magnification	1:4.3 (0.2x)
Aperture

	Wide minimum	f/4.5	below average
	Wide maximum	Unknown
	Tele minimum	f/5.6	below average
	Tele maximum	Unknown
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	Sony Alpha (Full-frame)
	Length	Unknown
	Diameter	Unknown
	Filter size	Unknown
	Weight	1.8 kg	below average
Angle of view

	Wide horizontal	17.1°	below average
	Telephoto horizontal	5.2°	above average
	Wide vertical	11.4°	below average
	Telephoto vertical	3.4°	above average
	Wide diagonal	20.4°	below average
	Telephoto diagonal	6.2°	above average
Angle of view (On Sony Alpha DT APS-C 1.5x crop cameras)

	Wide horizontal	11.2°	below average
	Telephoto horizontal	3.4°	above average
	Wide vertical	7.5°	below average
	Telephoto vertical	2.3°	above average
	Wide diagonal	13.5°	below average
	Telephoto diagonal	4.1°	above average

DiscussionWhat do you think about the Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha lens?

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Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha

compatibilitywith digital cameras

Full frame

APS-C (1.5x crop factor)

Pros

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha vs other Sony Alpha (Full-frame) lenses

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha vs other Sony Alpha (Full-frame) wildlife lenses

Cons

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha vs other Sony Alpha (Full-frame) lenses

Specifications

General

Aperture

Features

Form factor

Angle of view

Angle of view (On Sony Alpha DT APS-C 1.5x crop cameras)

DiscussionWhat do you think about the Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Sony-alpha lens?

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