Review Sigma 135mm f/1.8 Art

0
0
0
s2smodern

135mm telephoto lenses have a select group of enthusiasts, who enjoy the high image quality of these short telephoto lenses and the corresponding shallow depth of field at f/2.8. The Sigma 135 mm f/1.8 Art raises the bar even higher in terms of brightness. What does that high brightness mean for the bokeh and the image quality? The Sigma 135mm f/1.8 ART is available in Canon, Nikon and Sigma mount. We screwed the latest Sigma Art lens via a Sigma MC11 on a Sony A7R III, to try out this spectacular light giant.

DSC01254

Zoom lenses are getting better. But not as good as this 135mm fixed focal length, which is also much brighter.

With a weight of 1130 grams and an adapter of 2 ounces, the Sigma 135mm f/1.8 is almost twice as heavy as our Sony A7R III test camera. Yet the combination sat quite nicely in the hand. Most likely, that will only get better if you use this Sigma on a professional Canon or Nikon SLR camera. For Sony users, the hand position can still be improved by placing an extra grip under the camera or choosing an A9 with vertical grip.

DSC01258

The reflections in the water show a very limited degree of flare, and if you stop down far enough (this shot was taken at f/8), beautiful sun rays appear around the bright points of light. 

BUILD AND AUTOFOCUs

PPhoto 135 18 a017 vertical

This Sigma 135 mm f/1.8 ART has the same high build quality that we have come to expect from the other Sigma ART lenses. What we are also slowly getting used to is the fact that, especially with the bright versions, the weight and dimensions (82mm filter size!) are not modest. That comes with the package if you want to get the highest quality from modern sensors with lots of megapixels. Everything about the ART lenses is aimed at delivering almost uncompromising picture quality. The lens design consists of 13 lens elements in 10 groups, with 2 high-quality fluorite-like (FLD) lens elements (in yellow) and 2 elements with an extra-high refractive index (SLD in blue). The lens has an HSM (hypersonic) AF focusing mechanism, which - if you want - you can manually overrule and that focuses quickly and accurately. The wide focus ring is comfortable in the hand, and its action is beautifully smooth. Often you won't even need that, since the repeatability of the focus is better than 5%, which is a very good score. This means that you will hardly have any differences in focus when, for example, you take a whole series of portrait photographs. And that is actually just as important as the maximum image quality. A portrait photo with a very sharp tip of the nose but blurry eyes is really not very useful. The lens also has a window that indicates the set distance. With this you can also check whether the set distance also matches the actual distance. The Sigma 135 f/1.8 ART also has two more switches. One to limit the autofocus range, which is useful if your subject is at a certain, more or less fixed, distance and one to turn off the autofocus so that you can work entirely manually. 

Sigma135mmlensdesign

Some manufacturers give a lot of information about the lens design on their websites, such as the calculated MTF charts or the calculated distortion. With Sigma, you can also find such information on the Global Website for the Arts, Sports and Contempoarary lenses. The calculated distortion given on the website corresponds well with the distortion of 0.56% we measured with Imatest. As the picture from Sigma shows, this slight distortion is really only visible in the corners of the image, at more than 20 mm from the center. That's a nice value.
In practice, even on a camera with a full-frame sensor, you will see even less (read: nothing), because both when opening RAW files in Lightroom or Photoshop and when saving jpg files in the camera, this little bit of distortion is completely corrected. The jpg file of the Sony A7R III showed 0.005%. Even for very critical architectural applications or product shots, this is excellent. 

DistortionSigma

Specifications
Sigma 135m f/1.8 Art
Price @ Amazon
Image Stabilization:+
lenses/ groups:13 / 10
length x diameter:115 / 91
filter size:82
Weight:1130
Lens hood:+

IMAGE QUALITY

DSC01268

Vignetting in uncorrected RAW files is clearly visible with 1.5 stops at f/1.8, so at full aperture. That is not necessarily a bad thing. Many portrait photographers like to have a natural vignette like that around their subject. If you find it problematic, you can easily reduce it by stopping down. The vignetting has already been halved at f/2.8 and halves again at f/4. In jpg files stored in the Sony A7R III camera, so that some correction has already been done in the camera, the vignetting at f/1.8 was less than 1 stop, at f/2.8 less than half a stop and from f/4 less then a quarter stop. The same applies to RAW files that you open in Lightroom or Photoshop.

JPGvignet

Both the center sharpness and the sharpness at the edges or in the corners are actually extraordinarily good from f/1.8. At f/4, the highest center sharpness is reached, and for the outer corners, this is at f/5.6. The center sharpness is already so high at full aperture that you see hardly any visible gain with stopping down. That is exactly what you hope for with a bright portrait lens. Photographing at f/4 or f/5.6 is mainly because you want more depth of field or because the corners also have to be perfect. 

Sigma135ResolutieJPG

DSC01328The aperture of the Sigma 135mm f/1.8 Art consists of 9 rounded blades and offers a very, very beautiful bokeh. That applies both in front of and behind the focal plane.

CONCLUSION: REVIEW Sigma 135mm f/1.8 Art op Sony A7R III

Use the Lens Comparison or look in our list of reviewed lenses tocompare 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

135
135
9.4
9.1
9.0
8.1
9.9
9
8

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

135
135
9.8
9.7
9.8
8.1
8.0
9
8

PROS

  • Fantastic picture quality from full aperture
  • Lens errors are noticeably absent
  • Fantastic build quality

CONS

  • 12cm long, 9cm wide and more than 1 kilo in weight
  • Price matches the high quality: more than 1,000 euros

The Sigma 135 mm f/1.8 Art achieves the highest performance of all lenses with a field of view of 135 mm that we have reviewed.

Sigma has in recent years always improved on world records when it comes to brightness. That is remarkable for a manufacturer who, in addition to several high-end lenses with uncompromising optical performance and fantastic build quality (Art series), has also produced a wide range of specialized lenses for action photography (Sports series) and modern, compact, affordable (zoom) lenses (Contemporary series). Perhaps the most remarkable thing is the sublime picture quality at full aperture of the world champions in the field of brightness. First, we were pleasantly surprised by the Sigma 18-35 mm f/1.8 Art (for APS-C) and the Sigma 24-35 mm f/2 (for full-frame) zoom lenses. Over the past year, we have been treated to the Sigma 14 mm f/1.8 Art and the Sigma 135 mm f/1.8 Art. The combination of extremely high brightness and fabulous image quality makes these lenses all highly recommended for those looking for the best. Shots taken at 135mm f/1.8 offer you the ability to go completely nuts creatively and to take pictures with which you can distinguish yourself from everyone else. Buy a Sigma 135mm f/1.8 and indulge yourself.    

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