Sigma 50-120mm F2.8 DC OS Lens - Canon RF

Sigma 50-120mm F2.8 DC OS Contemporary Lens - Canon RF

The Sigma 50-120mm F2.8 DC OS Contemporary is a compact large-aperture telephoto zoom designed for Canon RF mount APS-C mirrorless cameras. Covering a useful 80-192mm equivalent focal range, it combines a constant F2.8 aperture with powerful optical stabilisation, fast autofocus and impressive close-focusing performance.

Ideal for portraits, wildlife, sports, events and detail photography, the 50-120mm F2.8 delivers the reach and subject separation expected from a telephoto zoom while keeping size and weight remarkably low for easier handheld shooting and travel.

Compact Telephoto Versatility

The 50-120mm zoom range provides an approximately 80-192mm equivalent field of view on Canon APS-C EOS R cameras. This makes it particularly well suited to portraits, candid photography, events and more distant subjects where additional reach is required.

At the longer end, the telephoto perspective provides attractive compression and helps isolate subjects against softly rendered backgrounds, while the constant F2.8 maximum aperture offers excellent creative control throughout the entire zoom range.

Constant F2.8 in a Lightweight Design

Despite combining a constant F2.8 aperture with a substantial telephoto range, the Canon RF mount version measures just 97mm long and weighs approximately 410g.

Its compact dimensions make it an excellent partner for APS-C EOS R cameras, particularly for photographers who want telephoto capability without carrying a much larger conventional F2.8 zoom.

Fast Autofocus & Powerful Optical Stabilisation

Sigma's HLA (High-response Linear Actuator) provides fast and responsive autofocus for both stills and video, helping the lens keep up with moving subjects.

Built-in OS (Optical Stabilisation) uses Sigma's OS2 algorithm to provide up to 6.5 stops of stabilisation at the wide end and 4.5 stops at the telephoto end, helping reduce the effects of camera shake when shooting handheld.

High Optical Performance

The optical design incorporates 18 elements in 13 groups, including one FLD, three SLD and four aspherical elements. These specialised elements help control optical aberrations and maintain strong contrast and image quality throughout the zoom range.

The lens also provides useful close-focusing performance, with a minimum focusing distance of 23cm at 50mm and a maximum magnification ratio of 1:3, allowing detailed close-up images alongside more traditional telephoto photography.

Designed for Stills & Video

The optical design has been developed to minimise focus breathing, helping reduce unwanted changes in angle of view as focus is adjusted during video recording.

On the Canon RF version, the lens features a control ring, with functions assigned through the camera. Depending on the camera being used, the focus ring can also operate as a control ring. A dust- and splash-resistant structure and water- and oil-repellent coating on the front element provide additional protection when working outdoors.

Key Features & Specifications

• Canon RF mount for APS-C mirrorless cameras
• 50-120mm telephoto zoom range
• Approx. 80-192mm full-frame equivalent
• Constant F2.8 maximum aperture
• Minimum aperture: F22
• HLA (High-response Linear Actuator) autofocus
• OS2 Optical Stabilisation
• Up to 6.5 stops stabilisation at 50mm / 4.5 stops at 120mm
• Optical construction: 18 elements in 13 groups
• 1 FLD, 3 SLD and 4 aspherical elements
• Minimum focusing distance: 23cm at 50mm / 55cm at 120mm
• Maximum magnification: 1:3 at 50mm / 1:4.7 at 120mm
• 11-blade rounded diaphragm
• 55mm filter thread
• Dimensions: 69mm diameter × 97mm length
• Weight: Approx. 410g
• Control ring
• Dust- and splash-resistant construction
• Water- and oil-repellent front coating
• Designed to minimise focus breathing

What's in the Box

• Sigma 50-120mm F2.8 DC OS Contemporary Lens - Canon RF
• Lens Hood
• Front Lens Cap
• Rear Lens Cap