![]() Objektyvas Sigma 18-35mm f/1.8 DC HSM Art Nikon Nedaug naudotas, 200 nuotrak. iauliai, kiti miestai Sisti siunt vos nuo 1,93 350 7,89 sumajo. Thanks to our knowledge of lens design accumulated over a long period of time plus the latest lens manufacturing techniques, SIGMA has finally made the dream of a zoom lens with F1.8 throughout its entire focal range come true. Objektyvas Sigma 18-35mm f/1.8 Dc Hsm Art Nikon. This 18-35mm f/1.8 DC HSM Lens is a versatile Art-series zoom lens from Sigma that is uniquely fast and designed to cover wide-angle to normal focal lengths. It has enabled us to develop a wide glass-molded aspheric lens, and the incorporation of SLD (Special Low Dispersion) glass has optimized power distribution of the optical elements and compensated for various aberrations as well as curvature of field at the widest angle. Sigma 18-35mm f/1.8 DC HSM Art Aperture Range: f/1.8-16 Fast Constant Maximum Aperture Designed for APS-C-Sized Sensors 35mm Equivalent Focal Length: 28.8-. The Sigma 18-35mm f/1.8 Art EF Mount is part of Sigmas Art line of lenses designed to achieve optical performance that is suited specifically for creative. In addition, the technological innovation at our Aizu factory also contributes to better lens production. ![]() As you’d expect from a zoom with an f/1.8 maximum aperture, it’s a pretty substantial chunk of metal and glass. It’s designed for APS-C sensor cameras, which means the effective focal length is actually about 27-50mm. In order to compensate for astigmatic aberration across the entire focal range, we have relied on the experience and know how gained when designing our super wide angle zoom lenses such as SIGMA12-24mm F4.5-5.6 II DG HSM and SIGMA 8-16mm F4.5-5.6 DC HSM. A few weeks ago, Sigma announced an 18-35mm f/1.8 zoom the world’s fastest zoom lens for digital SLRs. While the Nikon 35 f/1.8 is useable on fx, the Sigma 18-35 f/1.8 is unuseable an fx camera at 35mm. As the aperture value gets larger, the depth of focus becomes shallower, thus it makes the lens design extremely complicated in order to compensate for various distortions, such as spherical, axial chromatic and astigmatic aberration along with curvature of field. Features - Sigma 18-35mm F1.8 DC HSM Lens for Canon: 18-35mm focal length (27-53mm equipment) Extremely fast F1.8 maximum aperture : Ring-type ultrasonic focus motor with full-time manual override: Initially available in Canon EF, Nikon F and Sigma SA mounts: Specifications - Sigma 18-35mm F1. My Sigma 18-35 f/1.8 just barely covers the dx sensor for most of the focal range, and produces a heavy black circle around most of an fx sensor. To achieve a wide zoom lens with a maximum aperture of f1.8, various technical problems need to be overcome.
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