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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 oating 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.
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.
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 ne branches. The end result is ultra-high resolution and clarity throughout the image, even at wide-open aperture.
Fast And Nimble Autofocus
The large (HSM) Hyper-Sonic Motor delivers ample torque to the focusing group for outstanding 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.
Mount With Dust- And Splash-Proof Design
Since the area of the lens most vulnerable to dust and other foreign bodies is the mount, rubber sealing helps provide peace of mind. In addition, the front lens element features a water- and oil-repellent coating that helps the lens perform well in the rain, near water, and in other challenging conditions.
- Focal Length: 135mm
- Minimum Aperture: F16
- Lens Construction: 13 elements in 10 groups
- Angle of View: 18.2 degrees
- Number of Diaphragm Blades: 9 (rounded diaphragm)
- Minimum Focusing Distance: 87.5cm/34.4 inch
- Maximum Magnification: 1:5
- Filter Size: 82mm
- Diameter: 91.4mm x 114.9mm / 3.6in x 4.5in
- Weight: 1130g/40.9oz