Image © Sigma Corporation

Without doubt any new lens covering these focal lengths with a constant maximum f/2.8 aperture is going to intrerest a lot of people. Alongside Sigma have made sure it is right up to date with the latest optical and mechanical features. Price is still to be confirmed.

PRESS RELEASE

February 2010

70-200mm f2.8 EX DG OS HSM

Large aperture telephoto zoom lens equipped with OS

The Sigma Corporation is pleased to announce the new Sigma APO 70-200 F2.8 EX DG OS HSM.

This large aperture telephoto zoom lens incorporates Sigma’s original Optical Stabiliser function.

The lens covers a medium telephoto range of focal lengths from 70mm to 200mm and has a large maximum aperture of F2.8 throughout the entire zoom range. The OS (Optical Stabiliser) function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. For Sony and Pentax mount, the built-in OS function of this lens can be used even if the camera body is equipped with an image sensor shift anti-shake system. As compensation for camera shake is visible in the view finder, the photographer can easily check for accurate focus and ensure there is no subject movement.

Two FLD (“F” Low Dispersion) glass elements, which have the performance equal to fluorite glass, and three SLD (Special Low Dispersion) glass elements provide excellent correction of colour aberration. High image quality is assured throughout the entire zoom range and an optimum optical power layout provides superior optical quality in all shooting ranges from close-up to infinity. Super Multi-Layer Coating reduces flare and ghost.

This lens incorporates HSM (Hyper Sonic Motor), ensuring a quiet and high speed AF as well as full-time manual focus capability. The lens has a minimum focusing distance of 140cm (55.1”) throughout the entire zoom range and a maximum magnification ratio of 1:8. The rounded 9 blade diaphragm creates an attractive blur to the out of focus images. This lens is equipped with a Petal-type hood. For digital cameras with an APS-C size image sensor, a dedicated hood adapter, which expands the length of the lens hood, is supplied.

*The Pentax mount Tele Converter cannot be used with this particular lens. *Nikon and Pentax mounts do not have an aperture ring. Some functions may not work depending on the camera model. *For Nikon and Canon mounts, Optical Stabiliser (OS) function will not work with film SLR cameras except Nikon F6 and Canon EOS-1V. *For Pentax and Sony mounts, it is not possible to use the AF and the built-in OS function of this lens when attaching it to film SLR cameras as well as Pentax *ist series and K100D. *When using the OS function of a lens with a camera which incorporates a stabiliser unit, please turn the camera’s stabiliser unit off.

THE SPECIFICATIONS

Minimum Aperture F22 Minimum Focusing Distance 140cm

Lens Construction 22 Elements in 17 Groups Maximum Magnification 1:8

Angle of View 34.3°- 12.3° Filter Size 77mm

No. of Diaphragm Blades 9 pcs Lens Hood Petal-type

Weight TBA

SRP TBA

Dimensions Diameter 86.4mm x Length 197.6mm

Available Fittings Sigma AF, Nikon AF, Canon AF, Pentax AF, Sony AF

End. (21/02/10).