Photokina 2006 Show
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The following is an unedited press release, shown as received from the company represented. We've elected to present selected releases without editorial comment, as a way to provide our readers more information without further overtaxing our limited editorial resources. To avoid any possible confusion or conflict of interest, the Imaging Resource will always clearly distinguish between company-provided press releases and our own editorial views and content.

Sigma's APO 300-800mm F5.6 EX DG HSM lens. Courtesy of  Sigma, with modifications by Michael R. Tomkins. PRESS RELEASE: The Sigma Corporation is pleased to announce the launch of four new lenses for the Four Thirds System.


NEW PRODUCT INFORMATION -

DC lenses: 18-50mm F2.8 EX DC MACRO
DG lenses:24mm F1.8 EX DG ASPHERICAL MACRO, APO 135-400mm F4.5-5.6
DG, APO 300-800mm F5.6 EX DG HSM

The new Sigma lens line-up for the Four-Thirds system comprises the large aperture wide-angle 24mm F1.8 EX DG ASPHERICAL MACRO, the compact telephoto zoom lens APO 135-400mm F4.5-5.6 DG, the large aperture ultra-telephoto zoom lens 300-800mm F5.6 EX DG HSM and the large aperture zoom lens 18-50mm F2.8 EX DC MACRO.

The introduction of these new lenses increases our lens line-up for Four Thirds mount to a total of eleven models.


EX series large aperture zoom lens with a minimum focusing distance of 20cm designed specifically for use with digital SLR cameras including the Four Thirds system.

Sigma's 18 - 50mm F2.8 EX DC Macro lens. Courtesy of  Sigma, with modifications by Michael R. Tomkins. Click for a bigger picture!

18-50mm F2.8 EX DC MACRO

This lens has a large aperture of F2.8 throughout the entire zoom range. A minimum focusing distance of 20cm (7.9”) and a maximum magnification of 1:3, makes it ideal for close-up photography.

Specially designed to suit the characteristics of digital SLR cameras, this lens provides a high level of optical performance. Its design incorporates both glass-mould and hybrid aspherical lens technology which offers extremely high image quality as well as a compact and lightweight construction. Minimal vignetting and superior peripheral brightness is ensured.

Special Low Dispersion (SLD) and Extraordinary Low Dispersion (ELD) glass elements provide excellent correction of color aberrations. The super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras.

High image quality is assured throughout the entire zoom range. An inner focusing system eliminates front lens rotation, making the lens particularly suitable for using the petal-type lens hood (supplied) plus circular polarizing filters.
*With Four Thirds cameras, the focal length will be equivalent to 36-100mm.

THE SPECIFICATIONS

Mount Type Four Thirds
Minimum Aperture F22
Lens Construction 15 Elements in 13 Groups
Angle of View 62.0°-24.4°
Number of Diaphragm Blades 7pcs
Minimum Focusing Distance 20cm (7.9”)
Maximum Magnification 1:3
Filter Size 72mm
Lens Hood Petal Hood
Dimensions Diameter 79mm (3.1”) x Length 91.1mm (3.6”)
Weight 525gr /18.5oz
UPC No. 0085126 581589


A large aperture wide-angle lens with close up capability for the Four Thirds system.

Sigma's 24mm F1.8 EX DG Aspherical Macro lens. Courtesy of  Sigma, with modifications by Michael R. Tomkins. Click for a bigger picture!

24mm F1.8 EX DG ASPHERICAL MACRO

This large aperture F1.8 wide-angle lens has a minimum focusing distance of 18cm (7.1”) and a maximum magnification of 1:2.7. Two aspherical lenses ensure the utmost correction of distortion and aberrations. The floating focus system provides high optical performance from 18cm to infinity. The Dual Focus (DF) system makes the lens easy to hold and eliminates focus ring rotation during auto-focusing, making the lens particularly suitable for accepting the petal-type lens hood.
*With Four Thirds cameras, the focal length will be equivalent to 48mm.

THE SPECIFICATIONS

Mount Type Four Thirds
Minimum Aperture F22
Lens Construction 10 Elements in 9 Groups
Angle of View 48.5°
Number of Diaphragm Blades 9pcs
Minimum Focusing Distance 18cm (7.1”)
Maximum Magnification 1:2.7
Filter Size 77mm
Lens Hood Petal Hood
Dimensions Diameter 83.6mm (3.3”) x Length 87.9mm (3.5”)
Weight 520gr /18.3oz
UPC No. 0085126 432584


Compact telephoto zoom lens for Four Thirds system.

Sigma's APO 135 - 400mm F4.5 - 5.6 DG lens. Courtesy of  Sigma, with modifications by Michael R. Tomkins. Click for a bigger picture!

APO 135-400mm F4.5-5.6 DG

This telephoto zoom lens gives the equivalent field of view to our popular 800mm when used on Four-Thirds cameras.

The very latest lens coating technology and lens design reduce flare and ghosting, a common problem with digital cameras. This lens uses one aspherical lens and three Special Low Dispersion (SLD) glass elements for excellent correction of various aberrations. The rear focusing system ensures fast focusing speed as well as preventing the front of the lens rotating, making it particularly suitable for use with circular polarizing filters. A removable tripod collar is included as a standard component.
*With Four Thirds cameras, the focal length will be equivalent to 270-800mm.

THE SPECIFICATIONS

Mount Type Four Thirds
Minimum Aperture F22
Lens Construction 13 Elements in 11 Groups
Angle of View 9.2° - 3.1°
Number of Diaphragm Blades 9pcs
Minimum Focusing Distance 200cm (78.7”) - 220cm (86.6”)
Maximum Magnification 1:5.3
Filter Size 77mm
Lens Hood Bayonet type Hood
Dimensions Diameter 83.5mm (3.3”) x Length 189mm (7.4”)
Weight 1280gr / 45.1oz
UPC No. 0085126 727581


Large aperture ultra-telephoto zoom lens gives an equivalent field of view to 1600mm for the Four Thirds system.

Sigma's APO 300-800mm F5.6 EX DG HSM lens. Courtesy of  Sigma, with modifications by Michael R. Tomkins. Click for a bigger picture!

APO 300-800mm F5.6 EX DG HSM

This large aperture ultra-telephoto zoom lens covers the equivalent field of view to 600mm to 1600mm when used on Four-Thirds cameras.

By continuously varying the angle of view, the lens takes a lot of the footwork out of picture composition. The very latest lens coating technology and lens design reduce flare and ghosting, a common problem with digital cameras. Two ELD glass elements in the front lens group reduce chromatic aberration to a minimum and also ensure high optimum image quality. The overall length of the lens does not change during focusing and zooming, ensuring convenient handling.

The HSM provides ultra quiet, high-speed autofocusing as well as full-time manual focus override. This lens is designed to accept a 46mm circular polarizing filter in a rear filter holder.
*With Four Thirds cameras the focal length will be equivalent to 600-1600mm.

THE SPECIFICATIONS

Mount Type Four Thirds
Minimum Aperture F22
Lens Construction 18 Elements in 16 Groups
Angle of View 4.1° - 1.5°
Number of Diaphragm Blades 9pcs
Minimum Focusing Distance 600cm (236.2”)
Maximum Magnification 1:6.9
Filter Size 46mm (Rear)
Lens Hood Bayonet type Hood
Dimensions Diameter 156.5mm (6.2”) x Length 549.4mm (21.6”)
Weight 5915gr / 208.6oz
UPC No. 0085126 595586


(First posted on Tuesday, September 26, 2006 at 02:00 EDT)

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