| Sigma 70–300 mm APO DG Macro | |
| Maker: | Sigma |
| Feat-Is: | n |
| Feat-Usm: | n |
| Feat-Sbf: | n |
| Feat-Macro: | y |
| Type: | z |
| Application: | Consumer Telephoto Zoom |
| Flength: | 70–300mm |
| Aperture: | f/4 – f/5.6 |
| Groups: | 10 |
| Elements: | 14 |
| Diaphragm: | 9 |
| Close-Dist: | 150cm / (95cm Macro mode) |
| Max-Mag: | 1:4.1 / 1:2(Macro mode) |
| Weight: | 550 |
| Max-Diameter: | 76.6 |
| Max-Length: | 122 |
| Filter: | 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]