We have just arrived in Las Vegas where the PMA kicks off. This will be a great show with numerous introductions of new cameras, innovations, printers, scanners and lenses for the DSLR cameras. Last quarter of 2003 Sigma already introduced 1 new DSLR and 4 new lenses so the PMA will be used to present all those introductions to the visitors. However, today Sigma announces another new lens; the new 26-60mm F2.8 EX DG lens. From super-wide-angle of 24mm this lens has a very compact design as well as a large-aperture. By effective arrangement of Special Low Dispersion (SLD) and aspherical glass elements, this lens has compact dimensions of 83.6mm maximum diameter, and 87mm length.
It is capable of taking pictures from a close distance, minimum focusing distance is 38cm at all focal lengths, and it has a maximum magnification ratio of 1:5.8. Two Special Low Dispersion (SLD) glass elements are provided for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of Glass Mold Aspherical and three pieces of Hybrid Aspherical, total four pieces of aspherical lenses offer excellent correction for distortion as well as all types of aberration.
The design concept of this lens is especially suitable for the characteristics of Digital SLR Cameras. The high performance inner focus system is particularly suitable for using circular polarizing filters and a petal-type hood as the front of the lens does not rotate. This lens is also equipped with Zoom Lock Switch that eliminates "Zoom Creep". This remarkably compact high performance zoom lens is ideally suited for travelling.
The specifications of AF 24-60mm EX DG are:
Focal Length: 24-60mm
Minimum Aperture: F22
Lens Construction: 16Elements in 15Groups
Focusing System: Inner Focus
Angle of View: 84.1 °- 39.6 °
Number Diaphragm Blades: 9pcs
Minimum Focusing Distance: 38cm (14.9")
Maximum Magnification: 1:5.8
Filter Size (diameter): 77mm
Lens Hood: Petal Hood
Dimensions: Diameter 83.6mm (32.9") X Length 87mm (34.2")
Mounts (AF): Sigma, Canon, Nikon (D), Minolta (D) and Pentax
Weight: Not determined.