motor (HSM). Rounded aperture blades produce pleasing bokeh (out-of-focus characteristics). The lens will be available for Sigma, Canon, Nikon, Petnax and Sony DSLRs.
For details and specifications, read the Sigma press release:
24-70mm F2.8 EX DG HSM
The Sigma Corporation is pleased to announce the new 24-70mm F2.8 EX DG HSM. This large aperture standard zoom lens covers focal lengths from 24mm and is housed in compact construction.
The latest optical design provides an overall length of 94.7cm /3.7inch. It is ideal for general photography such as snapshots, portraiture and landscapes. The Super Multi Layer Coating reduces flare and ghosting. ELD (Extraordinary Low Dispersion) glass, two SLD (Special Low Dispersion) glass elements and three aspherical lenses provide excellent correction of all types of aberrations.
Superior optical performance is ensured throughout the entire zoom range. This lens incorporates HSM (Hyper Sonic Motor), ensuring a quiet and high speed AF as well as full time manual focusing capability. This lens has a minimum focusing distance of 38cm/15in and a maximum magnification ratio of 1:5.3.
The rounded 9 blades diaphragm creates an attractive blur. It is possible to attach the included petal-type hood to block out extraneous light.
Features:
Large aperture standard zoom lens
ELD and SLD glass provides excellent correction of all types of aberrations
Super Multi Layer Coating reduces flare and ghosting
Equipped with HSM ensuring quiet and high speed AF
The rounded 9 blade diaphragm creates an attractive blur
24-70mm F2.8 EX DG HSM specifications
Focal length 24 – 70mm
Angle of view 84.1°-34.3°
Maximum aperture F2.8
Minimum aperture F22
Lens Construction
• 14 elements/12 groups
• 1 ELD (Extraordinary Low Dispersion) glass
• 2 SLD (Special Low Dispersion) glass elements
• 3 Aspherical elements
Number of diaphragm blades 9 (rounded)
Minimum focus 38 cm (15 in)
Maximum magnification 1 : 5.3
AF motor type • Ring-type HSM (Hyper Sonic Motor)
• Full-time manual focus
Image stabilization • None
Filter thread • 82 mm
Supplied accessories
• Petal-type lens hood
• Case
Optional accessories
• DG UV 82 mm
• DG WIDE CIRCULAR PL 82mm
Weight TBD
Dimensions 88.6mm diameter x 94.7mm length
(3.5 x 3.7 in)
Lens Mount Sigma, Canon, Nikon, Pentax, Sony
