![]() In practice, this is unlikely to be picked up by a camera-mounted microphone except in a silent studio environment. While the focusing mechanism is generally silent, it occasionally makes a a slight sound, mainly at the closer focusing distances. Sigma 35mm F1.4 DG DN Art Close Focus, 1/1000s, f/2, ISO125, Sony A7R IV It’s also compatible with Sony’s Eye AF and when it’s mounted on the A7R IV, the camera is quick to spot human or animal eyes, depending upon the setting. There are faster optics, but it’s responsive enough for the situations in which it’s likely to be used most often. The combination of a single lightweight focusing element and a stepping motor enables the lens to focus quickly and silently on many occasions. The lower switch enables the lens aperture ring to be declicked, so that it rotates smoothly and silently without the usual haptic and audible feedback. Recent Sony mirrorless cameras enable one of a long list of features to be assigned to this button, and I opted for ‘Focus Magnifier’ to let me check the focus quickly whether the lens is set to AF or MF. Below this is a customisable button marked AFL. The uppermost of these is the AF/MF switch. What do you think? Do you already have the original 35mm F1.There are two switches and button on the left of the lens barrel. Each lens and all of its parts is built entirely at SIGMAs sole factory in Aizu in Japan. We’ll see if other mounts like Nikon Z or Canon RF will follow the initial Leica L and Sony E-mount options, but for now it’s only the latter two. Or, if you need a more compact option, maybe the SIGMA 35mm F2 DG DN | Contemporary ($ 639) might be worth a closer look. And if you want even more, you might want to check out the 35mm F1.2 DG DN | Art, although it’s more expensive ($1,499) and bigger in size. The “old” version is still available for $799. The new SIGMA 35mm F1.4 DG DN | Art will sell for $899 and it should be available soon (mid May). The lens comes with a locking petal type hood. Minimum focusing distance: 30 cm / 11.8 in.Number of diaphragm blades: 11 (rounded diaphragm).Lens construction: 11 groups, 15 elements (1 FLD, 1 ELD, 2 SLD and 2 aspherical lens).Here’s a quick rundown of the bare specs of the SIGMA 35mm F1.4 DG DN | Art lens: ![]() In addition, the front lens has a water and oil repellent coating. The entire lens is dust- and splash-proof and features sealed buttons and a rubber gasket around the mount. ![]() There is a customizable AFL button on the body of the lens that can be assigned different functions depending on the camera body used. Additionally, the aperture can of course be controlled manually or set to automatic. Speaking of manual operation of the lens, it also has a de-clickable aperture ring, a handy feature for filmmakers. Of course, the lens offers an MF/AF switch, so you can focus manually using the focus ring on the lens. This allows for smooth, fast and precise AF performance. The autofocus of the new 35mm F1.4 DG DN features a stepper motor that controls a focusing lens group consisting of a single lightweight element. The iris diaphragm consists of 11 rounded aperture blades that allow for a soft bokeh with rounded out-of-focus highlights. Image credit: SIGMAĪnti-ghosting and anti-flaring are two more features SIGMA throws into the mix, so this lens performs very well even in difficult lighting conditions like backlighting. ![]() A feature that is especially attractive to night sky photographers. Image credit: SIGMAĪccording to SIGMA, the new 35mm should perform very well even wide open, as the lens design is able to control sagittal coma flare very well, preventing bright points of light from flaring near the edges of the image. Since this lens was developed from scratch, let’s talk about the lens design: The new SIGMA 35mm F1.4 DG DN | Art consists of 15 elements in 11 groups, including one FLD (‘F’ Low Dispersion), one ELD (Extraordinary Low Dispersion), two SLD (Special Low Dispersion) and two aspherical lenses that minimize all types of aberration, including axial chromatic aberration that cannot be corrected in-camera.
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