Save An Extra 20% On Portrait Pro v21 With Code: EPBF20

Sigma 85mm f/1.4 DG DN Art Lens Review - Performance

 Add Comment

Sigma 85mm f/1.4 DG DN Art Performance

Sigma 85mm f/1.4 DG DN Art
 

 

Central sharpness is excellent at f/1.4 and f/2 and outstanding between f/2.8 and f/8, remaining excellent at f/11 and f/16.

Edge sharpness is good at f/1.4, very good at f/2, excellent at f/2.8 and f/4, outstanding at f/5.6 and f/8 and still excellent at f/11 and f/16.

Those sharpness results can only be described as outstanding overall, very nice indeed.

Sigma 85mm f/1.4 DG DN Art MTF Charts

How to read our MTF charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges.

The scale on the left side is an indication of actual image resolution and sharpness as LW/PH and is described in detail above. The taller the column, the better the lens performance.

For this review, the lens was tested on a Sony A7R III using Imatest. Want to know more about how we review lenses?

 

CA (Chromatic Aberration) is very well held at all apertures, centre and edge, not really being visible in any general photography. It is unlikely that the tiny amount of residual fringing would be a problem, but software solutions are always available if necessary.

 

Sigma 85mm f/1.4 DG DN Art Chromatic Aberration Charts

How to read our CA charts

Chromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Sony A7R III using Imatest.

 

Pincushion distortion can be measured at +3.15%, which is clearly visible on straight lines near the picture edges. This is not a problem for some images, such as perhaps landscapes, but it could well be for architectural shots. This is of course measured without any in-camera corrections switched on. Software solutions can be used when needed.

Bokeh is the smoothness of gradation of the out of focus areas in an image and with a telephoto lens, this is much easier to achieve. However, this lens does more than just achieve good selective focus and the bokeh is butter-smooth and quite delightful.

Flare is generally well-controlled, but it is possible to induce some artefacts. There is also the possibility of producing some very spectacular star effects when stopping down.

The vignetting results are interesting in that wide open there is particularly obvious corner shading. Also, as the sharpness is not quite as crisp at the edges wide open, these two things together make the lens rather appealing for portraiture. If we want beautifully crisp images edge to edge, then we stop down to f/2 and beyond and then it hardly matters what aperture we use, except to control depth of field. The vignetting eases off to a more even appearance by f/2 onwards.

 

Aperture Vignetting
f/1.4 -2.1 stops
f/2 -1.6
f/2.8 -1.4
f/4 -1.1
f/5.6 -0.9
f/8 -0.7
f/11 -0.5
f/16 -0.5


Sigma 85mm f/1.4 DG DN Art Sample Photos

 

Sigma 85mm f/1.4 DG DN Art Aperture range

 

You can view additional images in the Equipment Database, where you can add your own review, photos and product ratings.

 


Support this site by making a Donation, purchasing Plus Membership, or shopping with one of our affiliates: Amazon UK, Amazon US, Amazon CA, ebay UK

It doesn't cost you anything extra when you use these links, but it does support the site, helping keep ePHOTOzine free to use, thank you.

Other articles you might find interesting...

Tamron 70-300mm f/4.5-6.3 Di III RXD Review
Fujifilm XF Fujinon 50mm f/1.0 R WR Lens Review
Samyang AF 35mm f/1.8 FE Lens Review
Tamron 28-200mm f/2.8-5.6 Di III RXD Review
Olympus 150-400mm f/4.5 TC1.25x IS PRO Lens Official Details
Meike 6.5mm F/2.0 APS-C Manual Focus Fisheye Lens Now Availa...
Canon RF 50mm f/1.8 STM RF 70-200mm f/4L IS USM Announced
Panasonic S 85mm f/1.8 Lens Announced

There are no comments here! Be the first!


Sign In

You must be a member to leave a comment.

ePHOTOzine, the web's friendliest photography community.

Join For Free

Upload photos, chat with photographers, win prizes and much more.