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Sigma 135mm F1.8 DG HSM

Sigma 135mm F1.8 DG HSM

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Sigma 135mm F1.8 DG HSM









With F1.8 brightness, this telephoto lens for 

full-frame cameras further strengthens 
the Art line’s prime options


Sigma 135mm F1.8 DG HSM

Introducing the ultimate 135mm telephoto 
featuring top-level performance

Delivering the ultra-high resolution that brings 
the best out of 50MP+ ultra-high-megapixel DSLRs


Designed to prioritize optical performance—
with absolutely no compromises

Outstanding resolving power and minimized chromatic 
aberrations help make this the ultimate lens for portraits.

With resolution so crystal-clear that individual hairs can be discerned in a portrait, this large-diameter lens also delivers a beautiful bokeh effect, giving photographers everything they need. It performs better than typical large-diameter standard to medium telephoto lenses in producing close-ups and full-body shots in which the subject stands out against a pleasantly blurred background.

Optical design delivering ultra-high-resolution and minimized chromatic aberrations

In addition to an optimized power distribution, this lens features two SLD (Super Low Dispersion) glass elements and two FLD (“F” Low Dispersion) glass elements. These technologies help minimize chromatic aberrations, which tend to appear in the bokeh area outside of focus in portraits, as well as on slender objects such as fine branches. The end result is ultra-high resolution and clarity throughout the image, even at wide-open aperture.

Ideal for portraits requiring a dramatic bokeh effect

The 135mm focal length delivers a stunning compression effect: even fairly close to the subject, the telephoto ring allows the photographer to establish a variety of dramatic perspectives. The compression effect truly shines in both close-ups and full-length portraits, making composition easy. Moreover, the large diameter with F1.8 brightness makes possible a body shot with an impressive bokeh background. In sum, this lens puts a full menu of compositional options at the photographer’s fingertips.

 

The Art line’s sixth large-diameter prime lens for cameras with full frame sensors

The Art line was launched in 2012 with the SIGMA 35mm F1.4 DG HSM | Art as its first lens. Since then, the line has come to encompass a wide variety of lenses, and the new SIGMA 135mm F1.8 DG HSM|Art is the line’s sixth large-diameter prime for cameras with full-frame sensors. It sets a new standard for prime lenses in the ultra-high-megapixel era.

Image quality optimal for ultra-high-megapixel DSLRs

To deliver the ultra-high resolution that brings the best out of 50MP or higher ultra-high-megapixel DSLRs, the focus mechanism features SIGMA’s floating system. No matter what the distance from the subject, this lens offers top performance from the center to the edges of the image. By minimizing distortion as well, the lens delivers impeccable image quality—no need for digital adjustment during image processing.

Distortion

 Distortion guide

Exclusive low-dispersion glass

The degree to which light is refracted by glass depends on the light's wavelength. This fact causes different colors of light to focus at slightly different points. The result is chromatic aberration, the color fringing that is particularly noticeable in telephoto lenses. Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. Yet residual chromatic aberration known as “secondary spectrum” may still remain. To minimize this secondary spectrum, which can be a serious issue with conventional lenses, SIGMA lenses feature up to three types of exclusive low-dispersion glass offering superior performance: ELD (Extraordinary Low Dispersion), SLD (Special Low Dispersion) and FLD (“F” Low Dispersion). In particular, FLD glass offers ultra-low dispersion in combination with high transmittance and the anomalous dispersion characteristics of fluorite. Meticulous deployment of these types of exclusive low-dispersion glass and optimization of power distribution gives SIGMA lenses superlative image rendition undiminished by residual chromatic aberration.

Designed to minimize flare and ghosting

From the start of the design process, SIGMA measured flare and ghosting to establish an optical design that is resistant to strong incidental light sources such as backlight. At the prototyping stage, SIGMA used not only simulations but actual photographic experiments to assess flare and ghosting under multiple criteria, identify the causes of these issues under a wide range of situations, and take measures to mitigate them. In addition, SIGMA’s Super Multi-Layer Coating helps further reduce flare and ghosting and provide sharp, high-contrast images even in backlit conditions.

 

Vignetting

 Vignetting guide

Leveraging SIGMA’s latest technologies

Large HSM, dust/splash-proof construction, 
electromagnetic aperture control (for Nikon), and more

To achieve both outstanding optical performance and satisfying usability, this lens features the latest SIGMA technologies, including a large hypersonic motor (HSM), dust- and splash-proof construction, and other high-quality features.

The large HSM delivers highly responsive autofocus

The large hypersonic motor (HSM) delivers ample torque to the focusing group for utstanding speed, ensuring exceptionally stable performance even at lower speeds. Along with the optimized AF algorithm, this feature delivers fast autofocus photography. In addition, the focus limiter makes AF highly responsive to distance from the subject for even more nimble performance.

Nikon electromagnetic diaphragm mechanism included

The Nikon mount version of this lens includes an electromagnetic diaphragm mechanism that allows it to receive the appropriate signals from the camera body. This feature ensures precision diaphragm control and stable Auto Exposure (AE) performance during continuous shooting.

* Functionality may be limited on some camera bodies.

Rounded diaphragm

The 9-blade rounded diaphragm creates an attractive blur in the out-of-focus areas of the image.

 

Fast AF with full-time manual focus

Full-time manual focus function allows the lens to be switched to manual focus simply by rotating the focus ring.

Note: The operation of full-time MF may vary based on mount type.

Mount with dust- and splash-proof construction

The lens mount incorporates rubber sealing※ to protect the mount from dust and water drops.

* Except for SIGMA mount

High-precision, rugged brass bayonet mount

The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.


Lens construction

  • FLD glass
  • SLD glass

Specifications



SIGMA 135mm F1.8 DG HSM | Art  Impression

SIGMA announced a new 135mm lens featuring an F1.8 aperture on February 21, 2017. This is the 6th and the longest focal length lens in the Art line of lenses for 35mm full-frame cameras (released before the 14mm F1.8 DG HSM announced on the same date). And, this is the first F1.8 lens as opposed to all other five F1.4 lenses. I could imagine the reason why, but I checked with a SIGMA representative who said, "We roughly designed the F1.4 version to find that it would be incredibly big!" Incredibly big? I'm curious to take a brief look at it.

After hearing the story, I expected it to be quite large even though it's F1.8. But the one I saw at SIGMA headquarter was anticlimactically "small." Of course, the diameter of the front element is so large that I feel like I could be drawn into it. What can I say. The size is reasonable. It's a heavy lens, but I'm convinced when I consider the specification.




The first scene I shot was downtown at nightfall when the sun begins to fall and it becomes dark little by little. I should of course worry about camera-shake even at 1/200sec when shooting a 135mm handheld on a camera with more than 50 megapixels, but the speed of F1.8 saved me. After inspecting the output closely, I found it's resistant to green/purple fringe. While fringe is common when we shoot reflection of light directly, this lens corrects it almost perfectly allowing minimal fringing.





Next, I escaped the hustle and bustle of the city and headed to the seaside. I wanted to continue shooting it at wide open, but stopped it down to F11 following the basics of landscape photography in order to shoot the evening clouds. As expected, the rendition is amazing. By looking at the clouds, ridge lines of the mountains, and the crane at the bottom right (with birds), I discovered that the drawing lines are thin and very clear as if they have a confidence. Meanwhile, the thin focal depth of F1.8 works to isolate any focal point and you don't need to place the subject right in front of you anymore. Whether it's a painting or a photograph, they are on a flat surface. And, this is why the point of attention becomes important in photography. This lens has great power to emphasize the target even if it's ambiguous. In other words, it clarifies the intension of the photographer.




Lens construction 13 elements in 10 groups
Minimum aperture F16
Filter size φ82㎜
Angle of view (35mm) 18.2°
Minimum focusing distance 87.5cm / 34.4in.
Dimensions (diameter × length) Φ91.4mm × 114.9mm / 3.6in. x 4.5in.
Number of diaphragm blades 9 (Rounded diaphragm)
Maximum magnification ratio 1:5
Weight 1,130g / 39.9oz.
Appearance and specifications are subject to change without notice.
Case, Hood LH880­-03 are included.

Corresponding AF Mounts

SIGMA / NIKON / CANON

The Nikon mount version of this lens includes an electromagnetic diaphragm mechanism. Functionality may be limited on some camera bodies.
* Please see camera compatibility chart below.

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