Sigma 1424mm F28 Dg Dn Art Lens for Leica L

Introduction

The Sigma xiv-24mm F2.8 DG DN Art is a new ultra-wide-angle zoom lens that's available for both full-frame Sony E-Mount and L-Mount mirrorless cameras from Panasonic, Sigma and Leica.

Information technology features a abiding maximum aperture of f/two.8 throughout the zoom range and offers the equivalent angle of view as a 21-36mm lens when used on an APS-C photographic camera.

Optically the Sigma xiv-24mm F2.eight DG DN Art is comprised of 18 elements in thirteen groups including v Special Low Dispersion (SLD) elements and one F Low Dispersion (FLD) element, and it features a rounded 11 blade diaphragm which creates an attractive blur to the out of focus areas of the prototype.

It has a minimum focusing distance of 28cm/11in. and a maximum reproduction ratio of 1:7.three, a stepping motor that provides virtually silent loftier-speed AF performance, full-time manual focusing, enhanced atmospheric condition-proof construction, and Sigma's Super Multi-Layer and new Nano Porous coatings to assist reduce flare and ghosting.

The Sigma 14-24mm F2.8 DG DN Art lens is prcied at £1459 / $1399 in the UK and the US, respectively.

Ease of Use

Weighing in at 795g and measuring 13.1cms in length, the Sigma 14-24mm F2.viii DG DN Fine art is quite a big lens. Information technology's 100g heavier than its master rival, the Sony FE 16-35mm F2.8 GM, merely a trivial shorter as the Sony lens extends to 16cm in length when zoomed out to 35mm, whereas the length of the Sigma lens doesn't change.

While you can apply the Sigma xiv-24mm on a smaller APS-C body for a 21-36mm equivalent angle of view, it won't balance specially well. Equally demonstrated by the product images, it'southward a better match for a professional-class, total-frame camera like the brand new Sony A7R IV that we tested it with.

In terms of features, the Sigma fourteen-24mm F2.viii DG DN Art offers all the basics that you lot need, with one principal improvement when compared to some other Art lenses, namely enhanced weather-sealing which makes it both dust-proof and splash-proof, along with a water- and oil-repellent coating on the forepart lens element.

The main "missing characteristic" is the lack of built-in Vibration Reduction, although most of this lens' main rivals don't offer it either. Arguably optical image stabilisation isn't really needed for super-wide-angle lenses anyway, especially if they spend most of their lives mounted on a tripod.

Build quality is excellent. The lens has a plastic beat out with a mixture of metallic parts and a compound material, TSC (Thermally Stable Blended), used inside. It also incorporates a brass bayonet mountain that'due south claimed to be more durable. The optical elements are fabricated of loftier-class glass.

Focusing is usefully internal and manual focusing is possible when gear up via the Focus switch on the lens barrel. Full-time manual focus override is also available at whatsoever time only by rotating the focus ring.

The Sigma 14-24mm F2.8 DG DN Art lens has a generously sized focus ring. At that place are no hard stops at both ends of the range, though, making information technology more difficult to gear up focus at infinity. There's besides no distance scale or depth of field scale on this lens.

When it comes to auto-focusing, the Sigma xiv-24mm F2.8 DG DN Fine art zoom is a quick performer, taking about 0.15 seconds to lock onto the subject field when mounted on the Sony A7R Iv that we tested it with.

We didn't experience very much "hunting", either in good or bad light, with the lens accurately focusing almost all of the fourth dimension. It'due south also a very tranquility, almost silent performer, thank you to the built-in stepping motor, which makes this lens well-suited to video recording.

The lens has a dedicated AFL button to which various functions can be assigned, in addition to the default Auto Focus Lock setting, a feature which isn't plant on the DSLR version of this lens.

The Sigma xiv-24mm F2.viii DG DN Art ships with a adept quality soft case, a fixed plastic petal-shaped lens hood and a large round lens cap. Given the cost of the lens, we'd have liked to accept seen a difficult case included.

Note that this lens doesn't accept standard screw-on round filters due to its large, bulbous front element. Instead in that location's a built-in rear filter holder equipped with a fall prevention lock for attaching sheet type rear filters.

Focal Range

At the 14mm focal length the bending of view is 114.ii degrees, and at the 24mm focal length it'south 84.1 degrees.

Field of view at 14mm

Field of view at 24mm

Chromatic Aberrations

Chromatic aberrations, typically seen equally purple or blue fringes along contrasty edges, is very well-controlled with just minimal effects, as shown below.

Vignetting

With the lens set up to its maximum discontinuity of f/2.8, there is some noticeable low-cal fall-off in the corners. Stopping-down to f/5.half-dozen most eliminates this. Butt distortion at 14mm and to a lesser extent pincushion distortion at 24mm are both apparent.

Light fall-off at 14mm

Light fall-off at 24mm

Flare and Sunstars

The Sigma 14-24mm F2.eight DG DN Art produces quite nice sunstars when stopped-down to f/sixteen and f/22, just there are some obvious unwanted flare effects when shooting directly into the sun, every bit shown in the examples below.

Macro

The Sigma 14-24mm F2.eight DG DN Art isn't claimed to be a macro lens, with a minimum focusing distance of 28cm / 11in. and a maximum magnification ratio of 1:seven.3. The following example demonstrates how close you can become to your subject.

Bokeh

Bokeh is a word used for the out-of-focus areas of a photograph, and is usually described in qualitative terms, such as shine / flossy / harsh etc. In the Sigma xiv-24mm F2.eight DG DN Fine art lens, Sigma have employed an iris diaphragm with 11 rounded blades, which has resulted in very overnice bokeh for such a broad-bending lens. We do realise, however, that bokeh evaluation is subjective, so nosotros've included several examples below for your perusal.

Sharpness

In guild to show you how sharp this lens is, we are providing 100% crops on the post-obit pages.

1. Ease
   of Use
2. Sharpness:
   14mm
3. 18mm
4. 24mm
5. Sample
   Images
6. Lens
   Specs
7. Rating &
   Determination
8. Main
   Rivals

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Source: https://www.photographyblog.com/reviews/sigma_14_24mm_f2_8_dg_dn_review

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