Sigma 28-70mm f/2.8-4 DG Sony-alpha

$119
28-70 mm
autofocus 2.5x zoom lens
f/2.8-4
variable aperture

compatibilitywith digital cameras

Full frame

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

horizontal angle of view
65.2 - 28.7°
28-70mm
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
45.5 - 19.1°
43-107mm
35mm equivalent focal length

Pros

The Sigma 28-70mm f/2.8-4 DG Sony-alpha vs other Sony Alpha (Full-frame) lenses

	Quite short
	60 mm

	Great wide angle lens
	28 mm

Cons

The Sigma 28-70mm f/2.8-4 DG Sony-alpha vs other Sony Alpha (Full-frame) lenses

	Zoom lens
	Typically not as sharp as prime lenses

	Poor telephoto lens
	70 mm

	Poor macro
	1:6.5 (0.2x)

	Lacks a silent focus motor
	Louder and slower

The Sigma 28-70mm f/2.8-4 DG Sony-alpha vs other Sony Alpha (Full-frame) wide angle lenses

	Variable aperture
	Narrower aperture at longer focal lengths

Specifications

General

	Min focal length	28 mm
	Max focal length	70 mm
	Zoom range	2.5x
	Magnification	1:6.5 (0.2x)	below average
Aperture

	Wide minimum	f/2.8
	Wide maximum	f/22
	Tele minimum	f/4
	Tele maximum	f/22
Features

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

	Lens mount	Sony Alpha (Full-frame)
	Length	60 mm	above average
	Diameter	68 mm
	Filter size	58 mm
	Weight	245 g
Angle of view

	Wide horizontal	65.5°
	Telephoto horizontal	28.8°
	Wide vertical	46.4°
	Telephoto vertical	19.5°
	Wide diagonal	75.4°
	Telephoto diagonal	34.3°
Angle of view (On Sony Alpha DT APS-C 1.5x crop cameras)

	Wide horizontal	45.7°
	Telephoto horizontal	19.1°
	Wide vertical	31.5°
	Telephoto vertical	12.9°
	Wide diagonal	53.8°
	Telephoto diagonal	22.9°

DiscussionWhat do you think about the Sigma 28-70mm f/2.8-4 DG Sony-alpha lens?

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Sigma 28-70mm f/2.8-4 DG Sony-alpha

compatibilitywith digital cameras

Full frame

APS-C (1.5x crop factor)

Pros

The Sigma 28-70mm f/2.8-4 DG Sony-alpha vs other Sony Alpha (Full-frame) lenses

Cons

The Sigma 28-70mm f/2.8-4 DG Sony-alpha vs other Sony Alpha (Full-frame) lenses

The Sigma 28-70mm f/2.8-4 DG Sony-alpha vs other Sony Alpha (Full-frame) wide angle 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 28-70mm f/2.8-4 DG Sony-alpha lens?

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