The full realisation of the Art
Designed with a focus on sophisticated optical performance and tremendous expressive power, our new Art line of lenses delivers top-level image quality. With unsurpassed expressive performance, these lenses reach the high standards demanded by photographers with an artistic, creative inclination. Along with landscapes, portraits, still-life, close-up and casual snaps, they're perfect for the kind of photography that unleashes the inner artist. Ideal for studio photography, they offer just as much expressive scope when capturing architecture, starry skies, underwater shots and many other scenes. The full realization of the Art concept, the Sigma art 35mm F1.4 DG HSM is the perfect flagship. Hold it in your own hands and appreciate it with your own eyes.
A masterpiece large-aperture wide-angle F1.4 lens
A large-aperture lens with minimal axial chromatic aberration and superb peripheral resolution. Several types of optical aberration can affect the image quality of a lens. Chromatic aberration is among the most important, and minimizing it is essential. There are two types of chromatic aberration: transverse, which can be corrected for with digital processing; and axial, which is difficult to minimize after a shot is taken. In the 35mm F1.4 DG HSM, FLD (“F” Low Dispersion) glass, which is equivalent to fluorite in its characteristics, and SLD (Special Low Dispersion) glass help optimize the power distribution of the lens. This optimization minimizes axial chromatic aberration by causing the different wavelengths of light to strike the same focus position while also minimizing transverse chromatic aberration. In addition, aspheric lenses help minimize astigmatism and field curvature. Thanks to these features, resolution is extremely high from the center to the edges of the photograph.
Exclusive low-dispersion glass
The degree to which light is refracted by glass depends on the light's wavelength. This fact causes different colors of light to focus at slightly different points. The result is chromatic aberration, the color fringing that is particularly noticeable in telephoto lenses. Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. Yet residual chromatic aberration known as “secondary spectrum” may still remain. To minimize this secondary spectrum, which can be a serious issue with conventional lenses, SIGMA lenses feature up to three types of exclusive low-dispersion glass offering superior performance: ELD (Extraordinary Low Dispersion), SLD (Special Low Dispersion) and FLD (“F” Low Dispersion). In particular, FLD glass offers ultra-low dispersion in combination with high transmittance and the anomalous dispersion characteristics of fluorite. Meticulous deployment of these types of exclusive low-dispersion glass and optimization of power distribution gives SIGMA lenses superlative image rendition undiminished by residual chromatic aberration.
High resolution with beautiful bokeh effects
Minimal distortion combined with beautiful bokeh effects at large-aperture settings. The aspheric lens at the front of the lens series helps minimize both distortion and vignetting. The rounded diaphragm produces an attractive round bokeh effect at large-aperture settings. Optimized power distribution minimizes sagittal coma flare. Coma of point light sources near the edge of the image and axial chromatic aberration are both minimized, making the lens an excellent choice for photographing nighttime landscapes and heavenly bodies.