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Designed for APS-C DSLRs, the Sigma 50-100mm f/1.8 DC HSM Lens offers an 80-160mm equivalent focal length and a constant f/1.8 aperture throughout the zoom range.

High-End Optical Performance

As part of the premium Sigma Art series, the 50-100mm f/1.8 is ideal for artistic and creative photography. Its mid-range zoom delivers excellent optical performance with image quality matching a prime lens. Practical and versatile, the lens covers the 35mm equivalent of the three common prime focal lengths popular with wedding and portrait photographers including the 85mm, 100/105mm and 135mm

Constant Maximum Aperture

The lens delivers a constant maximum aperture of f/1.8 throughout the focal range and simultaneously maintains precise focus as the lens is zoomed. The bright constant aperture allows excellent low light performance and greater control over selective focus applications.

Premium Optics

With 21 elements in 15 groups, the lens comprises of three “F” Low Dispersion (FLD) glass elements and one Special Low Dispersion (SLD) glass element, three high-refractive index SLD glass elements, and one high-refractive index, high-dispersion glass element. Including one or more low-dispersion element in every element group ensures minimum chromatic aberration and outstanding edge-to -edge image quality throughout the zoom and focal range.

Super Multi-Layer Coating

A Super Multi Layer Coating on the lens elements reduce flaring and ghosting, providing sharp, high contrast imageseven when shot wide open in bright and backlit conditions.

Hyper Sonic Motor

The lens features Sigma's proven Hyper Sonic Motor (HSM) for silent, quick and precise auto-focusing. For greater accuracy in delicate focusing scenarios, the motor allows manual focusing override via focus ring even in the autofocus mode.

Internal Focusing

Incorporating a inner focus and inner zoom mechanism, the lens focuses without moving the front end of the lens whilst also maintaining a constant physical size. This efficient deisgn offers faster performance, controlled handling and provides protection to the front of the lens whilst also ensuring the lens internals remain free of dust and moisture.

High Speed Diaphragm

A rounded nine blade diaphragm made with fluorine coated polycarbonate and coated with a carbon feather film allows smooth and exceptionally fast aperture control. The polycarbonate construction of the blades ensure high durability and wear resistance, ensuring years of reliable, precision service.

Build Quality

The internal components of the lens are fabricated with metal and Thermally Stable Composite (TSC), offering higher precision levels and better performance under a wide temperature range. The bayonet mount is made of brass for higher durability and an accurate fit to the camera

Integrated Tripod Collar

An integrated tripod collar is also featured on the Sigma 50-100 mm f/1.8 Art lens, ensuring easy mounting on to a tripod or monopod for additional stability. The tripod socket also features 90-degree click stops for smooth switching between the horizontal and vertical orientation.

Focal Length

50-100mm (35mm equivalent : 80-160mm)

Lens Construction

21 Elements in 15 Groups

Minimum Aperture


Maximum Aperture


Angle of View

31.7 - 16.2°

Minimum Focus Distance

95 cm

Minimum Focusing Distance

37.4 in

Maximum Magnifications


Number of Diaphragm Blades

9 (Rounded)

Camera Mount

Canon EF

Format Compatibility


Auto Focus


Tripod Collar

Fixed Rotating

Filter Thread

82 mm

Dimensions (Diameter x Length)

93.5 x 170.7 mm


1490 gm

* Specifications subject to change by the manufacturer without notice

  • Available in Canon & Nikon Mounts
  • Lens Cap (LCF-82 III 82mm)
  • Rear Cap (LCR II for Canon EF Mount Lenses)
  • Lens Hood
  • Lens Case

Manufacturer Warranty

This product comes with a

24 month Australian warranty

from CR Kennedy & Company
(the sole authorised Australian Distributor)

Want to read more about warranties?

Click here

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* Dispatch timeframes are indications only and may vary for multiple quantities. Timeframes are updated regularly during normal business hours.