Sigma 70–300mm f/4–5.6 APO DG Macro lens

Sigma 70–300 mm APO DG Macro

Maker	Sigma
Technical data
Type	Zoom
Focal length	70–300mm
Aperture (max/min)	f/4 – f/5.6
Close focus distance	150cm / (95cm Macro mode)
Max. magnification	1:4.1 / 1:2(Macro mode)
Diaphragm blades	9
Construction	14 elements / 10 groups
Features
Short back focus	No
Ultrasonic motor	No
Lens-based stabilization	No
Macro capable	Yes
Application	Consumer Telephoto Zoom
Physical
Max. length	122
Diameter	76.6
Weight	550
Filter diameter	58mm

The Sigma 70-300mm F4-5.6 APO DG Macro lens is a consumer-level, telephoto zoom lens made by Sigma Corporation.^[1] Different versions of this lens are produced that work with cameras from Canon, Nikon, Pentax, Konica Minolta, Sony and Sigma. Additionally, Olympus' 70–300 f/4–5.6 lens for Four-Thirds has the same optical design and specifications as this lens. The lens is packaged with a lens hood.

Sigma's APO designation signifies an apochromatic lens that uses low dispersion glass to minimize chromatic aberration.^[2] The APO version has a red ring on the end of the lens body to distinguish it from the non-APO version of the lens, the Sigma 70-300mm F4-5.6 DG Macro.^[3]

This lens has 14 elements in 10 groups including two special low dispersion glass elements in the front lens group, and one in the rear lens group.^[1] The non-APO version has only one such element in the rear.^[3]

An additional feature to this lens is a macro option between 200–300mm.^[4] The minimum focusing distance between 200 and 300mm is 95 cm (37.4 inches). It is enabled by a manual switch and provides a maximum magnification of 1:2.^[1]

References