Review Sigma 24-70 mm f/2.8 Art

0
0
0
s2smodern

VERSATILE, ARTISTIC WORKHORSE: Sigma 24-70mm F2.8 DG OS HSM Art

A 24 to 70mm zoom is the standard lens for many photographers. With a range from big wide-angle to a bit of telephoto, you can use this lens for many different types of photography. Especially since it has a high brightness of f/2.8. Then a lens like that is good for almost everything, from landscapes and interiors in the wide-angle position to (travel) documentary, weddings and portraits in telephoto. For many photographers, the 24-70 mm f/2.8 hardly ever comes off the camera. High-quality 24-70 mm lenses with a brightness of f/2.8, however, also carry a stiff price. That's why many photographers were looking forward to the arrival of the Sigma 24-70 mm F2.8 in the Art series. The Art lenses combine high image quality with a generally very reasonable price.

 DSC1608

BUILD

pphoto 24 70 28 a017 l 01 2


The Sigma 24-70 mm F2.8 DG OS HSM Art is a substantial lens, but that's pretty much a given for these kinds of lenses. It's relatively short but quite thick and weighs a little more than a kilo. That makes it one of the heaviest 24-70mms. Only the Nikon 24-70 mm f/2.8 with VR is just slightly heavier. The lens comes with a flower-shaped lens hood. Immediately behind that, you find the broad zoom ring. Behind that, slightly closer to the camera, is the narrower focus ring. Right behind that is a window where you can read the set distance. There are two switches next to the window. One is for the autofocus and has three positions. In AF, only the autofocus works; in MO you can use the autofocus with manual correction, and in MF you can only focus manually. The second switch is for turning the image stabilization on and off. For a long time, image stabilization was an exception on these kinds of lenses, but it's gradually becoming quite normal, fortunately. The Sigma 24-70 mm F2.8 DG OS HSM Art is weatherproof and has a rubber seal on the mount. That's how it should be for a lens in this class. 

Specifications
Sigma 24-70 mm f/2.8 Art
Price @ Amazon
Image Stabilization:+
lenses/ groups:19 /14
length x diameter:108 / 88
filter size:82
Weight:1020
Lens hood:+

IMAGE QUALITY

DSC01347

JPGvignet 


The image quality of the Sigma 24-70 mm F2.8 DG OS HSM Art is generally pretty good. The best this lens can shoot for is the phenomenal quality of the fixed focal lengths in the Sigma Art series. They are almost perfect, so it's easy to hope that this zoom will come very close to that or at least reach values that are exceptionally good for this type of zoom. However, it's not as good as the fixed focal points. You see that especially at full aperture. The corners clearly lag behind the center, and that's actually true across the whole zoom range. Stopping down one stop already brings improvement, and at f/5.6 the lens is just very good over the entire field of view in all zoom modes..

JPGresolutie

The Sigma 24-70 mm f/2.8 Art benefits from in-camera lens corrections, in any case on the Sony we used for testing this lens. The vignetting is then fairly miinor, with less than one whole stop as the maximum value (at full aperture on 24mm). The same applies for the distortion, and the vignetting is minor. Chromatic aberration is reasonably well suppressed and only slightly visible at the edges of the image in the extreme zoom positions. The 70mm position has a bit more trouble than the 24mm position. But that's easy to correct in post-processing. In uncorrected RAWS, and therefore in the viewfinder of SLR cameras, you will see a bit more distortion, and there's some visible vignetting. The vignetting is a maximum of 2 stops at full aperture at 24 mm, and the distortion is 1.5% barrel-shaped in the wide-angle position and ranges to 1% pincushion in the telephoto position. Those are actually pretty great values, but the distortion is certainly visible in shots with straight lines if you don't make corrections.

JPGdistort

 DSC1603
beschrijving en gegevens (f, sluitetijd, bp) plaatje

Bokeh

The Sigma 24-70 mm F2.8 DG OS HSM Art has an aperture consisting of nine lamellae. Don't expect any special bokeh in the wide-angle position, but in the 70mm position it's not bad. The blur is then fairly soft and nicely even. That is of course helped along by the fact that at full aperture the sharpness to the corners drops off, but every little bit helps. In any case, it's quite nice for a portrait.

IMAGE STABILIZATION

IStest
The 24-70 mm f/2.8 Canon dates from 2012, making it one of the older 24-70mm's. That's how competitive this class is. It's also one of the few 24-70mms without image stabilization. The Sony 24-70 mm f/2.8 GM is also not stabilized, but it benefits from the image stabilization in the Sony camera bodies. Gradually, it's becoming quite normal that these kinds of lenses have stabilization too. According to Sigma, the image stabilization should be good for three to four stops. That's about what we found in practice.

Autofocus

With the older Sigma lenses, the autofocus was sometimes the Achilles heel of otherwise good lenses. The autofocus of the Sigma 24-70 mm F2.8 DG OS HSM Art is fine. The HSM, Hypersonic Motor, has been redesigned and is more powerful than those in the previous generation. The autofocus is quiet, pretty fast and quite accurate. The shortest setting distance is 0.37m, which results in a magnification of 0.21x in the 70mm position.

MOUNTS

 DSC1559

The Sigma 24-70 mm F2.8 DG OS HSM Art is available in Sigma, Canon and Nikon mount, and a version was recently released for Sony E-mount. The Nikon version has an electronic aperture. That works fine on the newer bodies, but not on all older models. You can also use a Canon or Sigma version with Sigma's MC-11 adapter on a Sony. If you're considering switching from Canon to Nikon or vice versa, you can also have the mount replaced by Sigma. The Sigma 24-70 mm F2.8 DG OS HSM Art is therefore very future-proof. Sigma also supplies a USB Dock with which you can easily install new firmware and make adjustments to your lens.

ConclusiON: REVIEW Sigma 24-70 mm f/2.8 Art

Use the Lens Comparison or look in our list of reviewed lenses to compare this lens with other lenses.

WYSIWYG score: This table shows the performance of this lens if you save the files in the camera as jpg, with all available in-camera lens corrections applied. This score gives you for this lens/test camera combination: "What you see is what you get".


Focal Length
mm @ FF
Total score
Resolution
lat. C.A.
Vignetting
Distortion
AF accur.
AF speed

24
24
9.3
9.0
9.0
7.4
9.5
7
28
28
9.0
8.8
9.2
8.0
8.5
7
35
35
8.9
8.5
9.6
8.0
9.0
7
50
50
9.2
8.6
9.6
8.3
9.8
7
70
70
8.5
8.2
7.8
8.2
9.9
7
Overall
Overall
8.8
8.5
9.0
8.0
9.3
7

Pure RAW score: This table shows the performance of this lens if the file is stored in the camera in RAW format. This score approaches the intrinsic quality of the combination of lens and test camera. If you use lens correction profiles in Photoshop or Lightroom to convert RAW files, then the RAW scores for distortion, vignetting and chromatic aberration are even better.


Focal Length
mm @ FF
Total score
Resolution
lat. C.A.
Vignetting
Distortion
AF accur.
AF speed

24
24
8.3
8.6
9.6
6.4
5.5
7
28
28
8.2
8.5
9.6
6.8
5.5
7
35
35
8.8
8.7
9.8
7.3
7.7
7
50
50
8.8
8.5
9.7
8.0
8.3
7
70
70
8.3
8.2
9.7
7.6
6.6
7
Overall
Overall
8.4
8.4
9.7
7.2
6.3
7

PROS

  • Good image quality
  • High brightness
  • Great bokeh
  • Solidly built
  • Good autofocus 
  • Favorably priced relative to the competition
  • Compact build

CONS

  • corner sharpness lags slightly at full aperture

The Sigma 24-70 mm F2.8 DG OS HSM Art is a beautiful all-round lens. The sharpness is generally very good, although for the best result you have to stop down one stop. The combination of good image quality, weather resistance and image stabilization ensures that this is an excellent lens for many types of photography and therefore also for many photographers. And that comes at a very attractive price.

Ivo Freriks
Author: Ivo Freriks
With Camera Review Stuff I hope to make a modest contribution to the pleasure that you get from photography. By testing cameras and lenses in the same way, evluating the results and weighing up the pros and cons, I hope to help you find the right camera or lens.

0
0
0
s2smodern

Leave your comments

  1. Posting comment as a guest.
Attachments (0 / 3)
Share Your Location