Sigma 18-50mm F2.8 EX DC Macro 4/3
Launched September 2006
18-50mm F2.8 EX DC MACRO
EX series large aperture zoom lens with a minimum focusing distance of 20cm designed specifically for use with digital SLR cameras.
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-mold 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 colour 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 polarising filters.
*With Four Thirds cameras, the focal length will be equivalent to 36-100mm.
| Specifications | |
| Construction | 15 Elements in 13 Groups |
| Focal Length | 18-50 (36-100)mm |
| Maximum Aperture | ƒ2.8 |
| Minimum Aperture | ƒ22 |
| Field of View | 62.0-24.4° |
| Minimum Focus Distance | 20cm |
| Number of blades | 7 |
| Maximum Magnification | 1:3 |
| Zooming System | N/A |
| Filter Size | 72mm |
| Diameter | 79mm |
| Length | 85.8mm |
| Weight | 450g |
| SRP at launch: | £369.99 |
| Available Mounts: | Four-Thirds |