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Black cylindrical lens barrel with silver mount ring and focus ring

SIGMA

SIGMA 18-50mm f/2.8 DC DN Contemporary camera lens for Canon RF

SKU CH-BZ9R-PW2CA

Compact APS-C zoom for Canon RF covering 29-80mm equivalent with constant f/2.8 aperture, weighing .66 lb and featuring dust- and splash-proof construction

  • TypeContemporary Lens
  • Focal Length18-50MM F2.8 DC DN / C
  • Camera Mountcanon_rf
  • Aperture2.8 millimeters
  • CompatibilityCanon RF
  • Diameter3 inches
  • Wide constant f/2.8 aperture across the 18-50mm zoom range
  • Compact 0.66 lb design with dust- and splash-proof construction
  • 55 mm filter thread keeps accessory costs low
  • 8 inch minimum focus for close-up flexibility
  • Three aspherical elements plus SLD glass reduce aberrations

RF-mount APS-C zoom lens

The SIGMA 18-50mm f/2.8 DC DN Contemporary is built for Canon RF APS-C bodies. It covers a 29-80mm equivalent range with a constant f/2.8 aperture. The lens suits photographers who want a bright standard zoom for everyday shooting and video work.

Simple mount with dust and splash protection

The lens attaches directly to the RF mount without an adapter. Its dust- and splash-proof construction helps keep internals clean during outdoor use. A 55mm filter thread accepts standard circular filters. The minimum focusing distance of 4.8 inches allows close-up detail work.

Steady performance at constant aperture

The f/2.8 aperture stays fixed throughout the zoom range, so exposure does not shift when framing changes. Three aspherical elements and one special low dispersion element control aberrations during extended use. The rounded seven-blade diaphragm produces smooth background rendering at all focal lengths.

Highlights

  • Wide constant f/2.8 aperture across the 18-50mm zoom range
  • Compact 0.66 lb design with dust- and splash-proof construction
  • 55 mm filter thread keeps accessory costs low
  • 8 inch minimum focus for close-up flexibility
  • Three aspherical elements plus SLD glass reduce aberrations

Specifications

TypeContemporary Lens
Focal Length18-50MM F2.8 DC DN / C
Camera Mountcanon_rf
Aperture2.8 millimeters
CompatibilityCanon RF
Diameter3 inches
ColorBlack
Focus TypeAuto Focus
Angle of View5
Filter thread (Diameter)55 millimeters
BrandSIGMA
ModelObjectif 18-50mm f/2.8 DC DN Contemporary
Part Number585972
Part585972
AutofocusAuto Focus
Dimensions2.93 in x 9.1 in x 9.1 in
Weight0.66 lb

Questions about this item

How can I confirm the autofocus is operating correctly on this 18-50mm f/2.8 DC DN lens after mounting it to my Canon RF body?

Mount the lens, set the focus switch to AF, half-press the shutter and verify the focus confirmation light or indicator illuminates; test at 18 mm and 50 mm across the aperture range from f/2.8 to f/22.

What comes in the box with part number 585972 and what must I purchase separately?

The box contains the Sigma 18-50mm f/2.8 DC DN Contemporary lens for Canon RF with front and rear caps; a 55 mm filter, lens hood and protective pouch are sold separately.

This model is only offered in one focal-length range and aperture — are there other versions or capacities to choose from?

No; the lens is supplied solely as the 18-50 mm f/2.8 DC DN Contemporary in Canon RF mount (part 585972) with a 29-80 mm equivalent field of view on APS-C.

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