Sigma announces 24 - 60mm F2.8 EX DG lens
By
Michael R. Tomkins, The Imaging Resource
(Tuesday, February 10, 2004 - 19:51 EST)
Sigma Corp. has today unveiled a new super-wide zoom lens designed for use with digital SLRs.
The new Sigma 24 - 60mm F2.8 EX DG, which is constructed with two SLD (Special Low Dispersion) and four aspherical glass elements, offers a bright maximum aperture of F2.8 across the zoom range. Weight isn't currently listed in Sigma's spec table, but the lens will be 87mm long and have a diameter of 83.6mm. Variants with lens mounts for the Canon, Minolta, Nikon, Pentax and Sigma cameras will be offered. Pricing and availability haven't been disclosed at this time.
The Sigma 24 - 60mm lens will offer equivalent focal lengths as follows with a selection of digital SLR models:
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Canon EOS-1Ds; Kodak DCS Pro 14n: 24 - 60mm (no multiplier)
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Canon EOS-1D & EOS-1D Mark II: 30.2 - 75.3mm equivalent
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Nikon D1, D1H, D1X, D100, D2H & D70; Fujifilm FinePix S1 Pro, S2 Pro & S3 Pro; Pentax *ist D: 36 - 90mm equivalent
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Canon EOS-D30, EOS-D60, EOS-10D & EOS 300D Digital Rebel: 38.4 - 96mm equivalent
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Sigma SD9 & SD10: 40.8 - 102mm equivalent
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Original Source Press Release:
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24 - 60mm F2.8 EX DG lens
A compact zoom lens with large aperture from 24mm super-wide-angle
Sigma Corporation is pleased to announce the launch of the new 24 - 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 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 traveling.
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THE SPECIFICATIONS OF AF 24 - 60mm EX DG |
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Focal Length |
24 - 60mm |
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Minimum Aperture |
F22 |
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Lens Construction |
16 Elements in 15 Groups |
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Focusing System |
Inner Focus |
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Angle of View |
84.1° - 39.6° |
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Number of Diaphragm Blades |
9 pcs |
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Minimum Focusing Distance |
38cm (14.9") |
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Maximum Magnification |
1:5.8 |
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Filter Size (diameter) |
77mm |
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Lens Hood |
Petal Hood |
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Dimensions |
Diameter 83.6mm (3.29") X Length 87mm (3.42") |
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Mounts (AF) |
Sigma, Canon, Nikon (D), Minolta (D) and Pentax |
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Weight |
Not determined |
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The appearance and specifications of the product are subject to change for improvement without notice.
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