Tamron 11-20mm F/2.8 Di III-A RXD Sony E

Tamron 11-20mm F/2.8 Di III-A RXD – Ultra-wide F2.8 zoom for Sony E APS-C mirrorless

The Tamron 11-20mm F/2.8 Di III-A RXD is the world’s first ultra wide-angle zoom lens for Sony E-mount APS-C mirrorless cameras to offer a constant f/2.8 aperture. It pairs a fast aperture with a compact design, making it a practical choice for photographers and filmmakers using Sony’s smaller mirrorless bodies.

Compact, fast and designed for Sony APS-C bodies

Despite its fast f/2.8 aperture, the lens remains very small. It measures only 86.2 mm in length and weighs just 335 g. Because of this compact size and light weight, it matches Sony’s compact APS-C mirrorless camera bodies well and stays unobtrusive when you carry it on location.

Versatile focal range and everyday use

The 11–20mm focal range gives you true ultra wide-angle capability at 11 mm (full-frame equivalent of 16.5 mm) as well as a useful short telephoto perspective at 20 mm (full-frame equivalent of 30 mm). This range lets you capture expansive scenes at the wide end and handle casual snapshot or street photography at the longer end without changing lenses.

Advanced optical construction for edge-to-edge sharpness

The lens uses a precise optical design to deliver sharp images across the frame. It has 12 elements arranged in 10 groups and includes specialized elements that reduce aberrations and maintain resolution from center to edge.

Specifically, the optical formula incorporates two GM (Glass Molded Aspherical) elements to ensure high resolution across the image. It also contains one XLD (eXtra Low Dispersion) and two LD (Low Dispersion) elements to reduce chromatic aberration and keep details crisp.

Coating and image quality

Tamron’s BBAR-G2 coating appears on lens surfaces to suppress ghosting and flare. This coating helps preserve color and contrast even when shooting into the light, which supports clearer detail and natural colors. Together, the optical elements and coatings contribute to smooth bokeh and consistent image quality.

Close focusing and magnification

The lens offers excellent close-focusing performance. Minimum Object Distance (MOD) is 0.15 m at 11 mm and 0.24 m at 20 mm, allowing you to get very close to subjects. At 11 mm the lens achieves a maximum magnification ratio of 1:4, enabling impactful wide-angle close-ups.

Performance for stills and video

The RXD (Rapid eXtra-silent stepping Drive) motor provides quiet, precise autofocus. It works well for both stills and video because it operates silently, reducing focus noise during recording. In addition, the lens is compatible with key Sony camera features such as Fast Hybrid AF and Eye AF, so the camera’s autofocus systems can work with the lens as intended.

Durability and weather resistance

The lens has a moisture-resistant construction and a fluorine coating on the front element. These features help protect the lens when you use it in harsher conditions and make the front element easier to clean.

Warranty and registration

Tamron offers a 5-year warranty on new lenses when you register the lens on Tamron’s web site within two months after purchase. To take advantage of this extended warranty, register your lens as described by Tamron. Registration information is available at https://5years.tamron.eu/.

Key specifications

• Compact ultra-wide-angle
• Great MOD (minimum object distance)
• Stunning image quality
• Moisture-resistant construction

FAQ

Question: Is this lens suitable for Sony APS-C mirrorless cameras?
Answer: Yes. The Tamron 11-20mm F/2.8 Di III-A RXD is made for Sony E-mount APS-C mirrorless cameras and is described as a perfect match to Sony’s compact APS-C bodies, while supporting features like Fast Hybrid AF and Eye AF.

Question: How close can I focus with this lens for creative wide-angle shots?
Answer: You can focus as close as 0.15 m at 11 mm and 0.24 m at 20 mm. At the widest setting the lens reaches a 1:4 maximum magnification, which is excellent for close wide-angle compositions.

Question: Is this lens protected against bad weather or spills?
Answer: The lens features a moisture-resistant construction and a fluorine coating on the front element to help protect it in harsher shooting conditions and to make cleaning easier.

Question: How do I get the 5-year Tamron warranty?
Answer: Tamron provides a 5-year warranty if you register the lens on their website within two months after purchase. For registration and full terms visit Tamron’s warranty registration page at https://5years.tamron.eu/.