Sigma 40mm F1.4 DG HSM Art For SONY SE Fit Black 332965

£44.95
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Sigma 40mm F1.4 DG HSM Art For SONY SE Fit Black 332965

Sigma 40mm F1.4 DG HSM Art For SONY SE Fit Black 332965

RRP: £89.90
Price: £44.95
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Description

On extremely close inspection, I could tell that edges pop slightly more with Adobe Lightroom CC’s sharpening, but it looks artificial. The natural sharpness captured by the Sigma 40mm Art is more than enough.

Focus accuracy and repeatability is critical to consistently produce sharp shots especially with large aperture lenses. Repeatability (the accuracy of focus on the same subject after repeated focus-acquisition) of this lens is very good (measured 99.4% in Reikan FoCal) with no outliers over a series of 40 shots. And there is no focus variation whether the lens focuses from a closer distance or from infinity. Yes. It’s expensive, but the Sigma 40mm Art is a wonderful lens that will impress even the most seasoned photographers. That angle of view drives subject distance choices (or meets distance-related requirements), and subject distances determine perspective. Bright light reflecting off lens elements' surfaces may cause flare and ghosting, resulting in reduced contrast and sometimes interesting, usually destructive visual artifacts.

Still, Sigma has a clear market strategy now, and it seems to be serving them well. The 40ART represents one of the more uncompromising lenses that I’ve reviewed (outside of the Zeiss Otus series); it makes no pretenses to moderation in its size (3.46 (W) x 5.16″ (L) / 87.8 x 131 mm) or weight (2.6 lb / 1.2 kg). This is a 40mm prime lens that weighs nearly as much as a 70-200mm F2.8 zoom (it actually outweighs Canon’s soon arriving RF 70-200mm F2.8L IS). As you can see from the photo above, it dwarfs the typically-sized Canon 35mm F1.4L II. But what the 40ART does have is a lot of Sigma’s wizardry in building high end Cine (cinematic lenses for video) that demand the very best in performance. This is also a fantastic focal length, with a slightly narrower angle of view than 35mm (good for portraits) but wider than 50mm (easier to use for general purpose). Does that outweigh the disadvantages of size, weight, and price? Read on to find out… When shooting at f/1.4, vignetting is noticeable towards the corners of the image frame. That’s not an altogether bag thing, as it can give an attractive look to many types of image, including portraits and still life shots. And if you’d rather have a more uniform level of peripheral brightness, in-camera correction for vignetting is available. The lens relies more heavily on in-camera correction for distortion, as is the case with the majority of recent lenses designed for mirrorless cameras. Whereas the previous DG edition was essentially a zero-distortion lens, the DN exhibits noticeable pincushion for a 50mm prime, when auto correction is disabled. All in all though, image quality and all-round performance are absolutely fabulous. Vignetting is correctable during post-processing, with increased noise in the brightened areas the penalty, or it can be embraced, using the effect to draw the viewer's eye to the center of the frame.

Sigma provides a 1-year limited warranty, and Sigma USA provides a limited 3-year warranty extension. In general, mid-focal length f/1.4 prime lenses are reasonably affordable relative to their capabilities, and the Sigma 50mm F1.4 DG DN Art Lens falls into this generalization.On a full-frame body, a 50mm focal length provides an angle of view that seems natural, and that aspect brings great general-purpose usefulness. Unfortunately, removal is sometimes very challenging, and in some cases, flare effects can destroy image quality. Lateral chromatic aberration is even better controlled in the DN lens compared with its forebear, which was already very good. As such, there’s virtually no color fringing to be seen towards the edges and corners of the frame. Axial chromatic aberration is also minimal, so there’s very little fringing around high-contrast edges in scenes that fall just in front of or behind the plane of focus. Resistance to ghosting and flare is again impressive. Bokeh is lusciously soft and dreamy. We noticed some ‘onion ring’ effect with the DG lens in defocused lights and bright spots but this is much more minimal in the DN lens. The image below is a 100% crop taken from the top-left corner of a Sony Alpha 1 image captured at f/1.4 (on a moonlit night). The ALC-SH168's rather rigid plastic build absorbs some impact and adds a layer of physical protection to the camera and lens.

At the end of this chapter, traditionally, we present crops taken from photo of our resolution testing charts, saved as JPEG files. Omitting the optical stabilization system reduces the size, weight, complexity, and cost of a lens. As the aperture narrows, the entrance pupil size is reduced, and the mechanical vignetting diminishes, making the corner shapes rounder.

Sigma 40ART Build and Handling

An 11-blade count diaphragm will create 22-point sunstars (diffraction spikes) from point light sources captured with a narrow aperture. The f/1.4 results show strong color separation, and you should expect to see this separation in some images, such as in the details of a white bridal dress. The outside is made from the same high quality polycarbonate we already know from the other Sigma Global Vision lenses.



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