Ultra-wide lens Tamron 11-20mm F/2.8 Di III-A RXD MILC Black

The Tamron 11-20mm F/2.8 Di III-A RXD is an ultra-wide-angle zoom lens for mirrorless cameras. With a constant maximum aperture of F/2.8 across the zoom range, the lens delivers reliable low-light performance and consistent exposure when shifting focal lengths. Its compact and lightweight construction makes it convenient for travel and on-location shooting. The optical design reduces distortion and maintains high sharpness across the frame, supporting wide-angle compositions such as landscapes, architecture and interior scenes.

Advantages

The lens offers a broad 11–20mm focal range optimized for ultra-wide perspectives while keeping a constant F/2.8 aperture for better control over depth of field and exposure. A compact form factor and reduced weight improve handheld usability and portability. Optical engineering minimizes chromatic aberration and distortion to deliver clear, high-resolution images across the frame. Fast and quiet autofocus enables smooth subject acquisition for stills and video.

Suitable for

• Landscape photography where wide fields of view are required
• Architectural and interior photography emphasizing perspective and structure
• Environmental portraits and group shots with contextual backgrounds
• Travel and street photography when compact, versatile wide-angle coverage is needed
• Video work requiring stable wide-angle framing and reliable autofocus

Key specifications

• Focal length: 11–20 mm (ultra-wide zoom)
• Maximum aperture: f/2.8 (constant across zoom range)
• Minimum aperture: f/16 (approximate; depends on camera)
• Optical construction: multi-element design with low-dispersion elements to reduce aberrations
• Autofocus: high-speed, near-silent focusing mechanism suitable for stills and video
• Filter thread: front filter mount compatible with slim filters (check camera/lens markings for exact size)
• Focus close distance: suitable for creative wide-angle close-ups (verify specific focus distance on lens body)
• Size and weight: compact, lightweight design for mirrorless systems

How to use

Mount the lens on a compatible mirrorless camera body and set the camera to the desired exposure mode. Use the 11–20mm range to capture expansive scenes; wider settings emphasize foreground elements and increase the sense of depth, while longer settings within the range reduce perspective exaggeration. Take advantage of the constant f/2.8 aperture in low-light situations or to isolate subjects with shallow depth of field. For architectural work, keep the camera level to minimize perspective distortion, and consider using a tripod for precise composition and longer exposures.

Usage recommendations

Use a lens hood to reduce flare and protect the front element. When shooting critical landscapes or architecture, stop down a couple of stops from maximum aperture to gain increased corner-to-corner sharpness. For video, enable continuous autofocus if your camera supports it and use smooth zoom or focal adjustments to maintain professional-looking footage.