![]() ![]() Even previously undetectable high-frequency details are now within the scope of our quality control inspections, allowing us to deliver consistently high lens performance. Applying this system, we check each lens in our new lines at our Aizu factory, our sole production site. However, we've now developed our own A1* proprietary MTF (modulation transfer function) measuring system using 46-megapixel Foveon direct image sensors. We used to measure lens performance using conventional sensors. Sigma lenses are born of well-thought-out design concepts and sophisticated, advanced Japanese manufacturing technology the final clincher is our lens performance evaluation. There are three requirements for outstanding lenses: fine design, precise manufacturing and inspection that ensures compliance with all specifications. Superior functionality across the lineup, thanks to Sigma's proprietary new A1 MTF measuring system When photographing with point light sources such as electric lights or reflections on a body of water in the background, the rounded 9-blade diaphragm helps produce an attractive bokeh effect-even at large-aperture settings. Ideal for studio photography, they offer just as much expressive scope when capturing architecture, starry skies, underwater shots and many other scenes. Along with landscapes, portraits, still-life, close-up and casual snaps, they’re perfect for the kind of photography that unleashes the inner artist. With unsurpassed expressive performance, these lenses reach the high standards demanded by photographers with an artistic, creative inclination. The full realization of the Art product concept for you to hold in your own hands and appreciate with your own eyesĭesigned with a focus on sophisticated optical performance and tremendous expressive power, our new Art line of lenses delivers top-level image quality. This is a revolutionary lens that overturns preconceptions while expanding the range of photographic expression. These outstanding performance characteristics are especially apparent in an APS-C format camera, since it has a slightly greater depth of focus than a full-frame camera. Taking on the challenge of creating the world’s first* wide-aperture lens to offer an aperture of F1.8 throughout the zoom range, Sigma has succeeded in creating a zoom lens that offers the same high optical performance of a fixed focal length lens. To solve this decades-long dilemma, Sigma proudly introduces the 18-35mm F1.8 DC HSM next-generation large-aperture APS-C format standard zoom lens for digital SLR cameras. On the other hand, photographers often need to change the angle of view to properly capture the scene that presents itself. The definitive large-aperture APS-C format standard zoom lensĪ large-aperture fixed focal length lens is great for achieving expressive bokeh effects and enjoying ultra-high optical performance. Image quality until now found only in a fixed focal length lens. It features 35mm Equivalent Focal Length of 27-52.5mm and a filter size of 72mm. It is compatible only with APS-C DSLR Cameras. ![]() The lens is exclusively designed for APS-C-Sized Sensors and runs with a silent autofocus via Hyper Sonic AF Motor. Internal focusing and zooming further back this claim.Give yourself a chance of discovering new trends in composing artistic photography with the Sigma 18-35mm f/1.8 DC HSM Lens with fast constant maximum aperture of f/1.8 perfect for shooting in any choice of light. The barrel is made of a lightweight TSC compound that gives the lens a solid, sturdy feel. Optically, four aspherical and five SLD glass elements are used to minimize distortion and aberrations throughout the zoom range, with Super Multi-Layer coatings for eliminating lens flare and ghosting. High Build and Image Quality: As a member of Sigma’s Art lens line, it goes through Sigma’s rigorous A1 testing, ensuring high image quality. You can also manually override the autofocus motor at any time by rotating the focusing ring, giving you quick fine-tuning ability. Provides fast, smooth, and quiet operation in a wide variety of shooting situations. This makes it a great option for landscape, event, and street photographers. ![]() Wide to Normal Range: With a 35mm-equivalent focal length of 27mm-53mm, it covers your wide to normal range. This enables stellar low-light shooting, as well as providing full-frame like depth-of-field on a crop-frame camera. Fast f/1.8 Aperture Zoom: While most zoom lens apertures top off at f/2.8, the Sigma 18-35mm bests that by 1 1/3-stops. ![]()
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