Sigma 70mm f/2.8 DG Macro Art Lens for Sigma SA

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Sigma 70mm f/2.8 DG Macro Art Lens
For Sigma SA-mount cameras
Telephoto lens
17 elements in 12 groups
Hyper Sonic Motor
Updated AF algorithm
Super Multi-Layer Coating
Rounded 9-blade diaphragm
Tripod collar
Sigma USB Dock compatibility
Weather-sealed design and protective front coating
Color: Black

Color:: Black

Color:: The color of the item.

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Lens Filter Size:: Front: 49 mm

Lens Filter Size:: The size of the filter that fits the lens.

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Maximum Aperture:: f/2.8

Maximum Aperture:: How wide a lens can be opened.

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Mount Type:: Sigma SA

Mount Type:: This is the mount type for the lens to attach to the camera body.

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overview

The Sigma 70mm f/2.8 DG Macro Art Lens deserves a place in your camera kit. It can be used with Sigma SA-mount cameras. The lens design comprises 13 elements in 10 groups. It includes two FLD and SLD elements along with a single high refractive index element to combat chromatic aberrations. Two aspherical elements reduce the effects of spherical distortions to improve clarity. The Super Multi-Layer Coating minimizes lens flare and ghosting. With the coreless DC motor, the lens remains silent when autofocusing on an object from a minimum distance of 25.8 cm. The autofocus override option lets you fine-tune the focus in the auto mode. Also, the large angle of rotation and a focus-by-wire system make focusing work easier. The 9-blade diaphragm produces a circular bokeh effect to improve the shallow depth of field. The Thermally Stable Composite material construction enables the lens to work at extreme temperatures. Optional teleconverters such as the TC-1401 and TC-2001 can be attached to this lens. This telephoto lens is compatible with the Sigma USB Dock to adjust the focus parameters and update the firmware.

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Specifications

Brand
Sigma - Sigma

Physical Specifications
Color:	Black
Color: The color of the item. View All Attribute Definitions

Brand
Brand:	Sigma

Camera Attributes
Autofocus:	Yes
Autofocus: All digital cameras come equipped with an Autofocus, or AF Mode. While in Autofocus the camera automatically focuses on subjects based on the AF Area Mode the user has selected. View All Attribute Definitions

Lens
Focal Length:	70mm
Focal Length: The distance between the film and the optical center of the lens when the lens is focused on infinity. View All Attribute Definitions

Lens Specification
Lens Min. Focus Distance:	10.16" (25.8 cm)
Lens Min. Focus Distance: The shortest distance that a lens can focus. View All Attribute Definitions
Lens Filter Size:	Front: 49 mm
Lens Filter Size: The size of the filter that fits the lens. View All Attribute Definitions
Dimensions:	Approx. 2.79 x 4.17" (70.8 x 105.8 mm)
Dimensions: Dimensions View All Attribute Definitions
Minimum Aperture:	f/22
Minimum Aperture: How wide a lens can be opened. View All Attribute Definitions
Lens Magnification Factor:	1.0x
Lens Magnification Factor: This is the magnifying factor of a lens. Macro lenses will often be described by their “magnification factor”. A lens with a 1:1 magnification factor produces a projected image on the sensor which is the same as the subject. View All Attribute Definitions
Elements / Groups:	13 / 10
Elements / Groups: The individual pieces of glass that form the overall optical construction. Most lenses have between four and eleven elements to bend the light rays to ensure a perfectly formed image appears on the light sensitive surface, such as a film or CCD. The elements are arranged in groups and may be seen in specification sheets as, for example, 6 elements in 4 groups. That configuration may have two single elements and the other four grouped in pairs. View All Attribute Definitions
Weight:	1.13 lb (515 g)
Weight: Weight View All Attribute Definitions
Angle of View (diagonal):	34.3°
Angle of View (diagonal): Area of a scene that a lens covers or sees. Determined by the focal length of the lens View All Attribute Definitions
Maximum Aperture:	f/2.8
Maximum Aperture: How wide a lens can be opened. View All Attribute Definitions
Mount Type:	Sigma SA
Mount Type: This is the mount type for the lens to attach to the camera body. View All Attribute Definitions