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Sigma 18 - 200 mm DC lens

Feb 14, 2005 at 00:05 GMT

Pre-PMA 2005: Sigma has today announced the new 18 - 200 mm F3.5 - F6.3 DC lens, this lens along with the two other new lenses announced today is designed specifically for digital SLR's with APS-C sized sensors (1.5x FOV crop or more), these are smaller and lighter than the equivalent 35 mm lens as they don't need to produce such as large an imaging circle. This new eleven times zoom lens although a little slow at telephoto (F6.3) would offer an impressive 27 - 300 mm equiv. on a 1.5x FOV crop camera (such as the Nikon D70).

Press Release:

Sigma 18-200mm F3.5-6.3 DC

Compact, Lightweight Superzoom lens, with high zoom ratio 11:1

Sigma Corporation is pleased to announce the launch of the new 18-200 F3.5-6.3 DC lens.

This high zoom ratio lens is exclusively designed for digital SLR cameras and capable of covering a wide range of focal lengths from wide-angle to telephoto. Two Special Low Dispersion (SLD) glass elements and two hybrid aspherical lenses offer the utmost correction for all types of aberrations, and enables this extended range super zoom lens to be housed in a compact and lightweight construction of 70mm (2.8”) diameter, and 78.1mm (3.1”) in length, and weighing just 405g/14.3oz. The new lens coating reduces flare and ghost, which is a common problem of digital cameras and also creates an optimum color balance. This lens has a minimum focusing distance of 45cm (17.7”) at all focal lengths and has maximum magnification of 1:4.4.

The lens design incorporates an inner focusing system, which prevents the front of the lens from rotating, making it particularly suitable for using circular polarizing filters and petal shaped lens hoods. The overall length of the lens does not change during focusing, ensuring convenient handling and ease of use. A zoom lock switch eliminates ‘zoom creep’ during transportation, a convenient addition when traveling.

Sigma 18 - 200 mm F3.5 - F6.3 DC lens specifications

Focal Length 18 - 200 mm
Minimum Aperture F22
Lens Construction 15 Elements in 13 Groups
Angle of View 69.3° - 7.1°
Number of Diaphragm Blades 7 pieces
Minimum Focus Distance 45 cm (17.7 in)
Maximum Magnification 1:4.4
Filter Size 62 mm
Lens Hood Petal Hood
Dimensions (dia x len) 70 mm (2.8 in) x 78.1 mm (3.1 in)
Weight 405 g (14.3 oz)
Lens mounts Canon, Sigma, Nikon, Pentax