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Sigma 35mm F1.4 DG HSM | Art (L Mount) Hire

One of SIGMA's finest creations yet, the 35mm F1.4 DG HSM | Art sets a new benchmark for performance, offering quality that exceeds expectations in every way.

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Overview

NB: If extremely precise autofocus is required, the Sigma calibration dock will fine-tune the relationship between the specific camera and the specific Sigma lens you are using. For ultra precision, you may want to also hire the Datacolor SpyderLENSCAL calibration chart. Please see accessories below.

A large-aperture wide-angle F1.4 lens with truly impressive image quality. A true flagship of artistic expression

SIGMA has always leveraged the most advanced optical technologies to offer photographers the highest level of lens performance. Now, SIGMA is proud to offer the first lens in an all-new product line: the 35mm F1.4 DG HSM. This wide-angle F1.4 lens delivers the highest level of brightness and beautiful bokeh effects. It offers the unique characteristics that only a large-aperture F1.4 lens can offer: shallow depth of field along with superior low-light and hand-held performance.

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.

Axial chromatic aberration

Axial chromatic aberration becomes a bigger issue with large-aperture lenses. As compared to conventional 35mm F1.4 lenses, this new lens is designed to produce images with extremely low chromatic aberration. As a result, it is possible to achieve a bokeh effect that is cleaner and more aesthetically pleasing than ever before.

Lens construction

Putting a large-aperture aspheric lens first in the series of lenses makes possible a slim barrel. A single FLD glass lens, which boasts the same performance as a fluorite lens, is combined with four SLD glass lenses to minimize chromatic aberration. And optimized power distribution helps correct various types of optical aberration. These features give this F1.4 large-aperture lens truly optimal image quality.

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.

Rounded diaphragm

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.

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