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The first model in the new SIGMA Art product line impresses with its versatility for artistic purposes. With its uncompromisingly high optical performance, the 35mm wide-angle lens will delight professional and ambitious amateur photographers alike. Many ambitious photographers will certainly prefer this 35mm lens to the more conventional 50mm version.
When the aperture is closed, for example, it achieves the depth effect of a wide-angle lens, while when the aperture is opened to F1.4, it gives the background a beautiful bokeh effect and makes the subject stand out, as with a medium telephoto lens. Another special advantage is its versatility for artistic purposes.
In addition to landscapes, portraits, still lifes, close-ups and snapshots, these lenses are great for the kind of photography that awakens the artist in a photographer. Not only are these lenses ideal for studio photography, but they offer just as much expressive power in architectural shots, starry skies, underwater shots and other scenes. The SIGMA 35mm F1.4 DG HSM is the first lens in the Art product line.
When DC series lenses are used on 35mm SLR cameras or digital cameras whose image sensors are larger than the APS-C format, vignetting occurs in the image.
Features
Corrects chromatic aberration to ensure unsurpassed expressive performance
Aberrations are a critical factor in the performance characteristics of a lens. In the realization of a high-performance lens, image aberration correction is one of the most important tasks. In the case of chromatic aberration, a distinction is made between lateral chromatic aberration and longitudinal chromatic aberration. The lateral chromatic aberration can be corrected later in image processing software, whereas the longitudinal chromatic aberration cannot be corrected later. This lens incorporates FLD ("F" low dispersion) glass elements, which have the same performance as fluoride glass, and SLD (special low dispersion) glass elements. By optimizing the power alignment of the lens, both types of aberrations could be corrected. As a result, the lens achieves an enormously high imaging performance over the entire distance range. Astigmatism and image field curvature have also been corrected by the matching alignment of aspherical lenses. This results in extremely high resolution even in the peripheral areas.
High speed through the largest possible aperture of F1.4
In 2005, SIGMA introduced a lens with F1.4 aperture specifically designed for digital cameras: the SIGMA 30mm F1.4 EX DC HSM. Since then, we have produced many high-performance lenses using the latest lens technologies, including the standard SIGMA 50mm F1.4 EX DG HSM lens designed specifically for full-frame sensors and the fast medium telephoto SIGMA 85mm F1.4 EX DG HSM lens. This lens, the SIGMA 35mm F1.4 DG HSM is our fourth lens to achieve the exceptionally expressive performance of F1.4 aperture. In wide-angle photography, this large aperture delivers excellent image brightness and wonderful bokeh.
Pleasant bokeh effect
Coma (asymmetry error) correction provides less blur for point light sources at the periphery, making the lens ideal for astrophotography and illuminations. The near-round aperture provides a very pleasing bokeh outside the plane of focus of the image. The aspherical lens element, which is used as the first lens, provides optimal edge illumination while correcting distortion.
Floating inner focusing system
This system enables correction of both astigmatism and spherical aberration, delivering extremely high optical performance in close-up photography.
Reflection and ghosting aware design
The high image quality of this flagship lens was achieved by thoroughly evaluating reflections and ghosting at an early stage of design to create the optical design that is resistant to adverse incident light. SIGMA Super Multi Layer Coating reduces flare and ghosting and delivers sharp, high-contrast images even when backlit.
Hyper Sonic Motor
The HSM (Hyper Sonic Motor) drive provides fast and silent autofocus, which can be manually intervened in at any time. With the improved AF algorithm, smoother AF is achieved.
Brass bayonet
The lens is equipped with a solid and precise brass bayonet. The special treatment of the surface to reinforce its strength allows for long-lasting use.
Ease of use
The new product lines include a rubber coating on the base of the supplied lens hood. For better operation, the design of the lens cap and AF/MF switch has been improved. To ensure high precision, metallic parts and the new composite material TSC (ThermallyStable Composite), which has a high metal affinity, are incorporated.
Evaluation with SIGMA's own "A1" MTF measurement system
We used to measure the performance of our lenses with MTF measurement systems that used conventional sensors. However, we have since developed our own MTF (Modulation Transfer Function) measurement system "A1", which uses the 46-megapixel Foveon direct image sensor. Even previously undetectable high-frequency details have now become testable as part of our quality control process. All lenses in our new product lines are checked by this "A1" before shipment.
Made in Japan
All of SIGMA's manufacturing - down to the parts and molds - is done entirely in Japan, based on an integrated production system. We are now one of the few manufacturers whose products are made exclusively in Japan. We like to think that our products carry the essence of our homeland, blessed with clear air and clean water and determined, hard-working people. We pride ourselves on the authentic quality of SIGMA products as the result of a combination of highly specialized expertise and intelligent modern technology. Our sophisticated products have always met the demands of amateur and professional photographers worldwide, as our manufacturing is based on true craftsmanship and the passion and pride of our experts.