Sigma 18-50mm F3.5-5.6 DC
Four-Thirds Fitting
Launched March 2004


18-50mm F3.5-5.6 DC
Compact-Lightweight zoom lenfor the “Four Thirds System (4/3 System)” Digital SLR

Sigma Corporation is pleased to announce the launch of the new 18-50mm F3.5-5.6 DC for the Four Thirds Digital SLR Camera System. This lens has already been well accepted as a high quality optic by users of Sigma, Canon, Nikon-D, Fuji and Pentax digital SLRs. This zoom lens was exclusively designed to suit the characteristics of digital SLR cameras with APS-C type sensors. The image circle was designed to match the size of the image sensors of digital SLR cameras, resulting in a compact and lightweight construction. The use of aspherical lenses provides correction for various aberrations throughout the entire zoom range and produces high level of optical performance. 18-50mm F3.5-5.6 DC lens has a minimum focusing distance of 25cm (9.8”) at all focal lengths and is capable of macro photography with a maximum magnification ratio of 1:3.5.

It is expected that Sigma will introduce the Four Thirds fitting to an ever – expanding range of their lenses in the future.

* If Olympus E-1 digital cameras is used, the angle of view will be equal to 36-100mm focal length.

Construction 8 Elements in 8 Groups
Focal Length (4/3 Equivalent) 36-100mm
Maximum Aperture ƒ3.5-5.6
Minimum Aperture ƒ22
Field of View 62-24.4°
Minimum Focus Distance 25cm
Number of blades 7
Maximum Magnification 1:3.5
Zooming System Clockwise
Filter Size 58mm
Diameter 67.5mm
Length 62mm
Weight 250g
SRP at launch: £99.99
Available Mounts: Four-Thirds