OS HSM superzoom.
For details, read the Sigma press releases:
Sigma 10-20mm F3.5 EX DC HSM Lens Announced Today
March 3, 2009 — The Sigma Corporation is pleased to announce the new SIGMA 10-20mm F3.5 EX DC HSM. This super-wide angle lens has a maximum aperture of F3.5 throughout the entire zoon range. Its wide angle of view from 102.4 degrees produces striking images with exaggerated perspective. The maximum aperture of F3.5 is ideal for indoor shooting and it enables photographers to emphasize the subject. Two ELD (Extraordinary Low Dispersion) glass elements and a SLD (Special Low Dispersion) glass element provide excellent correction of color aberration. Four aspherical lenses provide correction for distortion and allow compact and lightweight construction. The Super Multi-Layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high-speed AF as well as full-time manual focusing capability.
This lens has a minimum focusing distance of 24cm (9.4 inches) throughout the entire zoom range and a maximum magnification ratio of 1:6.6. The lens design incorporates an inner focusing system. It eliminates front lens rotation, making the lens particularly suitable for using the Petal-type hood. The Petal-type hood blocks extraneous light and reduce internal reflection.
* Vignetting will occur if the lens is used with 35mm SLR cameras or digital cameras with image sensors larger than APS-C size.
*For Pentax mount, if the camera body does not support HSM, auto focus will not be available.
Specifications (for Sigma Mount)
*Lens Construction:13 Elements 10 Groups *Angle of View:102.4°-63.8° *Number of blades:7pcs *Minimum Aperture:F22 *Minimum Focusing Distance Distance:24cm/9.4in *Maximum Magnification:1?6.6 *Filter Size:Ø82mm *Lens Hood:Petal-type hood *Dimensions:Ø87.3mm×88.2mm/3.4in×3.5in *Weight:TBD *The apperarance and specifications are subject to change without notice.
Sigma Announces 18-50mm F2.8-4.5 DC OS HSM Lens
This large aperture standard zoom lens incorporates Sigma’s original Optical Stabilization function.
This lens offers a large aperture of F2.8 at 18mm wide angle and anti-shake function, making it ideal for indoor photography and in low lighting conditions.
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 anti-shake function. 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 SLD (Special Low Dispersion) glass elements and three aspherical lenses provide excellent correction for all types of aberrations. The Super Multi-Layer Coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range.
The lens design incorporates inner focusing and inner zooming systems. The overall length of the lens does not change during focusing and zooming, ensuring convenient handling. This lens has a minimum focusing distance of 30cm (11.8 inches) throughout the entire zoom range and a maximum magnification ratio of 1:4.1. The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high speed AF.
* Vignetting will occur if the lens is used with 35mm SLR cameras or digital cameras with image sensors larger than APS-C size.
Specification
*Lens Construction:16 Elements 12 Groups *Angle of View:69.3°-27.9° *Number of blades:7pcs *Minimum Aperture (Wide):F22 *Minimum Focusing Distance Distance:30cm/11.8in *Maximum Magnification:1?4.1 *Filter Size:Ø67mm *Lens Hood:Petal-type hood *Dimensions:Ø74mm×88.6mm/2.9in×3.5in *Weight:395g/13.9oz.
Sigma 50-200mm F4-5.6 DC OS HSM Lens Announced Today
Sigma announces 50-200mm f/4-5.6 DC OS HSM
March 3, 2009 — PMA 2009 – The Sigma Corporation is pleased to announce the new SIGMA 50-200mm F4-5.6 DC OS HSM. This compact high-performance telephoto zoom lens incorporates Sigma’s own Optical Stabilizer function. The lens incorporates SLD (Special Low Dispersion) glass in the front lens group and is equipped with an inner focusing system to provide high image quality throughout the entire zoom range. The incorporation of HSM (Hyper Sonic Motor) ensures quiet and high-speed auto focus. The OS (Optical Stabilizer) function effectively eliminates the effects of camera shake so subjects can be easily and clearly seen in the viewfinder as well as in the image. It allows the use of shutter speeds approximately 4 stops slower than normal for steady, handheld photography.
For Sony and Pentax mounts he built-in OS System operates in conjunction with a camera body equipped with an anti-shake function and can be used as an alternative with cameras having built-in image stabilization. The Super Multi-Layer Coating reduces flare and ghosting and provides high contrast images throughout the entire zoom range. This lens has a minimum focusing distance of 110cm (43.3 inches) throughout the entire zoom range and a maximum magnification ratio is 1:4.5. An inner focusing system eliminates front lens rotation, making it suitable for use with circular polarizing filters. * Vignetting will occur if the lens is used with 35mm SLR cameras or digital cameras with image sensors larger than APS-C size.
Specifications
*Lens Construction:14 Elements 10 Groups *Angle of View:27.9°-7.1° *Number of blades:8pcs *Minimum Aperture (Wide):F22 *Minimum Focusing Distance Distance:110cm/ 43.3 in *Maximum Magnification:1?4.5 *Filter Size:Ø55mm *Lens Hood:Bayonet type hood *Dimensions:Ø74.4mm×101.9mm/2.9in×4.0in *Weight:TBD *The apperarance and specifications are subject to change without notice.
