Sigma remaining 12 months introduced two wide-angle high lenses for Sony E-mount and Leica/Panasonic/Sigma L-Mount full-frame mirrorless cameras, the Sigma 20mm F1.4 DG DN Artwork and the Sigma 24mm F1.4 DG DN Artwork. The 20mm high is especially noteworthy because it’s a fairly abnormal lens. Apart from for the Sigma 20mm F1.4 DG HSM Artwork for DSLR cameras, the Sigma 20mm F1.4 DG DN Artwork for mirrorless is the one 20mm F1.4 lens to be had for full-frame cameras.

No one else makes a lens like this, together with Canon, Nikon and Sony. There are 20mm F1.8 lenses however no 20mm F1.4 lenses. One of the vital sudden issues about this distinctive lens is that it retails for simply $899. Learn my hands-on evaluate of the Sigma 20mm F1.4 DG DN Artwork lens under.

Design & Usability

The Sigma 20mm F1.4 DG DN Artwork, like a lot of Sigma’s different Artwork sequence lenses, is a wonderful lens with its various black fabrics, together with some flat surfaces and a few with somewhat extra gloss. Relating to the shinier surfaces, they do a just right process repelling fingerprints, which is sweet. The lens is constructed the use of Sigma’s Thermally Solid Composite (TSC), one of those polycarbonate that behaves thermally like aluminum. The lens “feels” like steel to me. On the subject of fabrics, it’s a high quality lens.

This is a moderately huge lens at 4.4 inches lengthy with a most diameter of three.5 inches. It’s price noting that the max diameter is localized to the very entrance of the lens in order that it may well settle for 82mm filters with out a noticeable vignette. The remainder of the lens is narrower and particularly slender close to the lens mount. It weighs 1.4 kilos, which is heavy for a wide-angle high lens. That mentioned, the lens balances very properly at the Sony a7R IV digicam that I used to check it and is terribly simple to shoot hand held for prolonged sessions.

The lens comprises many switches at the barrel, all of which offer pleasing tactile comments, together with a brand new MFL transfer, which lets you lock guide concentration in order that should you by accident transfer the massive concentration ring, your concentration received’t exchange. Center of attention-by-wire lenses don’t usually be offering nice guide focusing reports, however this lens is an exception. There’s an AF/MF transfer, an aperture ring de-click transfer, an aperture ring lock transfer and a serve as button.

Talking of the aperture ring, it’s great. It comprises aperture markings at complete stops from F1.4 to F16 and dashes for every one-third aperture surroundings. There’s additionally an “A” surroundings that permits you to regulate the aperture the use of your digicam’s dials or let the aperture be managed robotically.

The lens comes with a high quality petal-type lens hood. It comprises more than one fabrics, together with one with a grippy floor to help you rotate the hood off and on the lens barrel. It features a lock button, too. A slot to rotate a polarizing filter out extra simply could be a pleasant development, however another way, it’s a just right, useful lens hood. The lens additionally comes with an oblong case. It’s no longer a troublesome case but additionally much more than a pouch. The cushy case comprises padding and a customized insert for the lens. It’s at all times great to look lenses include just right instances, particularly after they value below $1,000.

General, the Sigma 20mm F1.4 DG DN Artwork has superb construct high quality and design. The elements-resistant lens turns out poised to resist the weather and remaining photographers a very long time. It feels great within the arms, and its generously sized concentration ring works neatly, providing a just right quantity of resistance to make focusing actual and rewarding. Sigma’s design staff at all times does just right paintings, and the brand new 20mm F1.4 Artwork lens is not any exception.

Sony A7R IV, Sigma 20mm F1.4 DG DN Artwork. Publicity: 1/6 sec., ƒ/11, ISO 100.

Symbol High quality

The Sigma 20mm F1.4 DG DN Artwork comprises 17 parts in 15 teams, with two SLD parts and 3 aspherical lens parts. Some of the 3 aspherical parts is the most important double-sided aspherical part Sigma has ever utilized in considered one of its lenses.

The lens is sharp, particularly while you prevent down. It’s lovely just right at ƒ/1.4, however I did realize somewhat of softness total, even within the heart of the body. Granted, that is noticeable best when “pixel peeping.” Pictures glance sharp when seen at standard sizes and even fairly huge prints.

If you wish to beef up sharpness, all you should do is prevent all the way down to ƒ/2. The picture is noticeably sharper within the heart of the body at this aperture. Nook efficiency improves some, too, even though it’s no longer as giant of an development.

At ƒ/2.8, the lens is sharper nonetheless. At this aperture, the lens has completed optimum efficiency, as far as I will inform. The nook efficiency is somewhat higher, despite the fact that nonetheless no longer particularly nice, however that’s no longer sudden for a 20mm high lens. Is efficiency higher at ƒ/4 than at ƒ/2.8? If that is so, it’s by means of an excessively skinny margin. You’re splitting hairs to look a lot distinction between the picture high quality at ƒ/2.8 and ƒ/4.

After all, there’s extra to symbol high quality than sharpness. The Sigma 20mm F1.4 DG DN Artwork lens does an excellent process at controlling aberrations. Whilst there’s some minor pink fringing round high-contrast spaces, it’s slightly noticeable. The lens additionally plays neatly relating to distortion and vignette.

The lens options an 11-blade rounded aperture diaphragm. The ensuing bokeh could be very great. Even supposing it’s a wide-angle lens and also you don’t regularly concern about bokeh, it’s additionally an ƒ/1.4 lens. Out-of-focus parts are rendered softly, and bokeh has no unsightly, distracting parts.

Sony A7R IV, Sigma 20mm F1.4 DG DN Artwork. Publicity: 1/800 sec., ƒ/2.8, ISO 100.

Autofocus Efficiency

The Sigma 20mm F1.4 DG DN Artwork features a stepping motor and is an internally focusing lens. The autofocus velocity and accuracy are superb. The lens could also be lovely quiet when focusing, even though you’ll be able to once in a while pay attention a delicate humming.

The E-mount model that I used is appropriate with Sony’s fancy autofocus modes, together with DMF, AF+MF and AF Lend a hand. On the subject of guide concentration, I’ve already discussed the MFL lock transfer, which is superb. As for minimal focusing distance, the lens can concentration as shut as 9.1 inches, leading to a max magnification ratio of one:6.1. It’s a a long way cry from a macro lens, however it may well concentration on very shut foreground topics for panorama images.

There’s so much to love in regards to the Sigma 20mm F1.4 DG DN Artwork lens and little or no to dislike. The lens isn’t particularly sharp when shot wide-open, however preventing down even somewhat is helping so much. General, it provides a novel aggregate of an ultra-wide-angle box of view and speedy most aperture. To provide this compelling aggregate at $899 could be very spectacular.

Jeremy Grey is the evaluations editor of our sibling site Imaging Useful resource. Learn a longer model of this evaluate and try further pattern photographs at imaging-resource.com.