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Sigma 18-50mm lens

Dennis Hissink
PMA 2010 Report
Wednesday 4th, March 2009
Posted by: Dennis Hissink

Sigma Corporation is pleased to announce the new Sigma 18-50mm F2.8-4.5 DC OS HSM lens. This large aperture standard zoom lens incorporates Sigma’s original Optical Stabilisation function. This lens offers a large aperture of F2.8 at 18mm wide angle. This large aperture and anti-shale function is ideal for indoor photography and in low lighting condition. 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.

Sigma 18-50mm

Sigma 18-50mm F2.8-4.5 DC OS HSM lens
Two SLD (Special Low Dispersion) glass elements and three aspherical lenses provide excellent correction for all types of aberrations. Furthermore, the Sigma 18-50mm lens has a Super Multi-Layer Coating, to reduce flare and ghosting. High image quality is assured throughout the entire zoom range. The Sigma lens design incorporates inner focusing and inner zooming systems. The overall length of the 18-50mm lens does not change during focusing and zooming, ensuring convenient handling. The Sigma 18-50mm 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.

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Sigma 18-50mm lens specifications
• Lens construction : 16 elements, 12 groups
• Angle of view : 69.3°-27.9°
• Number of blades : 7pcs
• Minimum Aperture : F22
• Minimum Focusing Distance : 30cm / 11.8in
• Maximum Magnification : 1:4.1
• Filter Size : Φ 67mm
• Lens Hood : Petal-type hood
• Dimensions : Φ 74mm × 88.6mm / 2.9" × 3.5"
• Weight : 395g / 13.9oz

Sigma 18-50mm

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The PMA show, or Photo Marketing Association, continues its yearly tradition of maintaining a network of photo imaging as well as the experience and know-how of the industry. The PMA represents 20,000 members from over 100 countries, who are all active within the imaging industry. As a reflection of the changes in the market, the PMA organization has also changed and has become more diverse. Nowadays, the member group consists of representatives coming from photo retail, manufacturers, commercial photo labs, professional sports and news photography, in addition to small album print suppliers and photo processing centers. The PMA 2012 Trade show focuses on an industry which is heavily affected by the unstable situation of the global financial economy. However, whether the latter will also stand in the way of the innovation and product introductions, remains to be revealed by the PMA International Convention & Trade Show in Anaheim Convention Center (California, US).