Tamron 11-20mm F/2.8 Di III-A RXD Canon RF APS-C camera lens

Ultra-wide zoom for APS-C RF

The Tamron 11-20mm F/2.8 Di III-A RXD covers an ultra-wide 11 to 20mm focal range on Canon RF APS-C mirrorless bodies. Its constant f/2.8 aperture stays bright across the zoom, making it practical for low-light interiors, night skies and handheld video. The 65-degree angle of view at the wide end suits landscape, architecture and creative self-portrait work. Photographers who need a longer telephoto reach or full-frame coverage should look elsewhere.

Compact weather-sealed barrel

The lens measures 84.2mm long and weighs 340g, so it balances well on small APS-C bodies and fits easily in a day bag. A 67mm filter thread accepts standard circular polarisers and ND filters without vignetting at 11mm. Moisture-resistant construction protects the moving parts during light rain or humid conditions. The RXD stepping motor drives focus internally, so the barrel does not extend or rotate during autofocus.

Quiet RXD focus and bright aperture

The RXD stepping motor delivers fast, near-silent autofocus suitable for both stills and video recording. Constant f/2.8 allows higher shutter speeds in dim light, reducing the need to raise ISO or use a tripod. Optical design with special elements controls aberrations across the frame for consistent sharpness. Fluorine coating on the front element repels water and oil, simplifying cleaning in the field.