This ring has a non-linear response, which means that the focus throw varies depending upon the speed with which you rotate it. The focus ring has a very smooth movement and it can be adjusted with pressure from just your index finger or thumb. Where the Sigma 35mm F1.4 DG DN Art really scores, however, is with the way it feels in your hand. I used the Sigma 35mm F1.4 DG DN Art on the Sony A7R IV and it seems well-balanced. The Sony E-mount version is 111.5mm /4.4-inches in length and the L-mount version is 109.5mm / 4.3-inches whereas the older lens is 120mm/ 4.7-inches in length in E-mount and 118mm / 4.6-inches with the L-mount.Īlso, at 645g / 22.8oz for the L-mount lens and 640g / 22.6oz for the Sony E-mount version, the new lens is actually a little lighter than the old DSLR optic which weighs 755-665g / 23.5-26.6oz. It’s also a little shorter than the original lens. In fact, with a diameter of 75.5mm / 3-inches it’s actually a little slimmer than the original 35mm F1.4 DG HSM Art. There are full-frame 35mm lenses available in a wide range of sizes and the Sigma 35mm F1.4 DG DN Art is one of the larger examples, but by current standards it doesn’t seem excessive. The closest focusing distance is 30cm / 11.8-inches from the sensor, at which the maximum magnification ratio of 1:5.4 is achieved. In addition, Sigma’s anti-ghosting and anti-flare coating technology is utilised to boost performance when subjects are backlit, and there are water and oil repellant coatings on the front element to make it easier to clean.įurther good news is that the Sigma 35mm F1.4 DG DN Art is weather-sealed.Īutofocusing is handled by a stepping motor which drives a single, lightweight element, helping to make the autofocusing fast and quiet. This is adjusted using an aperture ring which can be used with or without clicks at the flick of a switch. There’s also an 11-blade iris which is rounded to help deliver smooth, circular bokeh. Meanwhile the two aspherical elements reduce distortion and maintain image quality across the image frame.
#Sigma 35mm plus
It, plus the SLD and ELD elements, reduces chromatic aberrations. The FLD element is made from glass that has an optical performance close to that of fluorite at a fraction of the cost and weight. Amongst these elements there are two Special Low Dispersion (SLD) elements, an Extraordinary Low Dispersion (ELD) element, an ‘F’ Low Dispersion (FLD) element and two aspherical elements. Additionally, a rounded nine-blade diaphragm contributes to a pleasing bokeh quality.While the 35mm F1.4 DG HSM Art is constructed from 13 elements in 11 groups, the new Sigma 35mm F1.4 DG DN Art has 15 elements arranged in 11 groups. The physical design features a brass bayonet mount, which offers rigidity and mounting precision along with a seal to guard against dust and moisture.
#Sigma 35mm manual
A Super Multi-Layer Coating is also featured, and helps to minimize flare and ghosting for greater contrast and color accuracy when working in strong lighting conditions.Ĭomplementing the imaging capabilities, the lens sports a Hyper Sonic Motor to produce quick, smooth, and quiet autofocus performance with full-time manual focus override. A floating elements system is also used to maintain performance throughout the focusing range. The optical layout incorporates both low dispersion and aspherical elements, which help to improve sharpness and clarity by controlling both spherical and chromatic aberrations. The bright f/1.4 maximum aperture helps to achieve shallow depth of field and selective focus effects, and also suits working in difficult lighting conditions. An optically advanced wide-angle prime, the Canon EF 35mm f/1.4 DG HSM Art Lens from Sigma mixes a comfortable focal length with an especially fast design.
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