Sigma 70–300mm f/4–5.6 APO DG Macro lens
|Aperture (max/min)||f/4 – f/5.6|
|Close focus distance||150cm / (95cm Macro mode)|
|Max. magnification||1:4.1 / 1:2(Macro mode)|
|Construction||14 elements in 10 groups|
|Short back focus||No|
|Application||Consumer Telephoto Zoom|
The Sigma 70-300mm F4-5.6 APO DG Macro lens is a consumer-level, telephoto zoom lens made by Sigma Corporation. 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. 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.
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. The non-APO version has only one such element in the rear.
An additional feature to this lens is a macro option between 200–300mm. 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.
- "70-300mm F4-5.6 APO DG Macro". Sigma Corporation. Retrieved 23 June 2013.
- Andrews, Ian (September 2, 2005). "Sigma 70–300mm F/4–5.6 APO DG Macro Interchangeable Lens Review". EPhotoZine. Retrieved 2008-05-05.
- "70-300mm F4-5.6 DG Macro". Sigma Corporation. Retrieved 23 June 2013.
- Sigma AF 70–300mm f/4–5.6 APO DG macro — Test Report / Review, photozone.de, accessed 2008-05-19