Sigma do plough their own field in many ways, and this focal length does give them something a little different than most. Here is the latest versions details:

Although high-function digital cameras now deliver improved picture quality at high-ISO settings, adjusting your lens to a large aperture is still the most effective strategy for action shots.

And even if you have to take the shots from a less-than-ideal position, as is so often the case when shooting sports or on-stage action, this zoom lens, with its maximum focal length of 300mm, lets you open up the aperture all the way to F2.8. In other words, when conditions are difficult, this high-performance lens gives you more scope to express yourself in the shots you take.

Price: TBD | Launching Date: TBD | Corresponding AF Mounts: TBD | Accessories: Metal lens hood, case, Tripod Socket TS-51

* The Appearance and specifications are subject to change without notice.

【Features】

1.Solid construction for use in harsh condition

This lens is dust and moisture-resistant and designed for use in the harsh shooting conditions of professional use. In addition, the operational feeling of the zoom ring and focus ring improve the overall handling of the lens.

2.Flare and ghosting conscious design

From an early stage, flare and ghosting are thoroughly measured to establish the design which is resistant to strong incident light such as backlight. Sigma’ s Super Multi-Layer Coating reduces flare and ghosting, and provides high contrast images even in backlit conditions.

3. Hyper Sonic Motor (HSM) is incorporated

The lens incorporates HSM (Hyper Sonic Motor) ensuring high speed and quiet AF as well as full-time manual focus override by rotation of the focus ring.

4.Rounded diaphragm

The rounded 9 blade diaphragm creates an attractive blur to the out of focus areas.

5.Convenient handling

The overall length of the lens does not change during focusing and zooming, ensuring convenient han-dling. The inner focusing system also eliminates front lens rotation, making the lens particularly suitable for using circular polarizing filters. A removable tripod collar is included as a standard component.

6.APO TELE CONVERTER

The addition of Sigma’ s APO TELE CONVERTER produces AF ultra-telephoto zoom lenses respectively.

【Specification】For Sigma

Lens Construction:23 elements in 18 groups | Minimum aperture:F22 | Filter _size:ø105mm | Angle of view (35mm equivalent):20.4 ° – 8.2 ° | Minimum focusing distance:150cm – 250cm/59.1in-98.4in | Dimensions (Diameter x Length):124.4mm x 291mm/4.8in.x11.5in. | Number of diaphragm blades:9(Rounded diaphragm) | Maximum magnification ratio:1 : 8.1 | Weight:TBD

End. (18/09/12).