Tamron's 16-50mm f/2.8 A Brings a Fast Zoom to Four APS-C Mounts From $529

Tamron has announced the 16-50mm f/2.8 A, a constant f/2.8 standard zoom for APS-C mirrorless cameras that starts at 16mm and goes on sale October 29 for Sony E at $529 and Canon RF at $549, with Nikon Z and Fujifilm X versions following later in the year.

The 16mm wide end works out to a full frame equivalent of 24-75mm on Sony E, Nikon Z, and Fujifilm X, and 25.6-80mm on Canon RF. Tamron keeps the f/2.8 aperture constant across that range in a lens that measures 3.2 inches (79.6mm) long and weighs 10.8 oz (305 g) in its Sony E version, with a 55mm filter thread. The A in the name marks it as a lens for APS-C mirrorless cameras, and the model number is B091. Tamron pitches the range for everything from landscapes, architecture, and group shots in tight spaces to casual snapshots.

Optics and Aperture

The optical design uses 14 elements in 10 groups. Tamron's lens diagram shows one LD (Low Dispersion) element, two molded glass aspherical elements, and two hybrid aspherical elements. Seven aperture blades form a circular diaphragm, which Tamron says "stays almost perfectly circular up to two stops down from maximum aperture," and the minimum aperture is f/16. Tamron says the f/2.8 aperture gives you soft bokeh and faster shutter speeds in low light.

VXD Autofocus and Video

Focusing is handled by Tamron's VXD (Voice-coil eXtreme-torque Drive) linear motor. Tamron describes it as high-speed and high-precision, with tracking meant to keep up with the unpredictable movement of children and pets, and lists quiet operation among the lens' features. The company also positions the lens for travel and everyday video.

Close Focus

At 16mm, the lens focuses as close as 6 inches (0.15 m) for a maximum magnification of 1:4.5. At 50mm, the minimum focus distance is 11.5 inches (0.29 m), with a maximum magnification of 1:4.8.

Build and Handling

The lens has moisture-resistant construction and a fluorine coating. Tamron calls the exterior design "Toned Profile Next." The front cap has a strap hole, so you can tether it instead of pocketing it every time you shoot, and the lens ships with a flower-shaped hood, the front cap, and a rear cap.

Size and weight change slightly by mount. The Sony E version is 64.4mm across, 79.6mm long, and 10.8 oz (305 g). The Fujifilm X version is 64.4mm across, 79.9mm long, and 10.8 oz (305 g). The Canon RF version is 69.2mm across, 77.6mm long, and 10.8 oz (305 g). The Nikon Z version is 70mm across and weighs 11.2 oz (315 g).

Key Specs

• Model: B091
• Mounts: Sony E, Canon RF, Nikon Z, Fujifilm X
• Focal length: 16-50mm (24-75mm equivalent on Sony E, Nikon Z, and Fujifilm X; 25.6-80mm on Canon RF)
• Maximum aperture: f/2.8, constant
• Minimum aperture: f/16
• Optical construction: 14 elements in 10 groups
• Minimum focus distance: 6 inches (0.15 m) at 16mm, 11.5 inches (0.29 m) at 50mm
• Maximum magnification: 1:4.5 at 16mm, 1:4.8 at 50mm
• Aperture blades: 7, circular diaphragm
• Autofocus motor: VXD linear motor
• Filter size: 55mm
• Weight: 10.8 oz (305 g) for Sony E, Fujifilm X, and Canon RF; 11.2 oz (315 g) for Nikon Z
• Length: 79.6mm (Sony E), 79.9mm (Fujifilm X), 77.6mm (Canon RF)
• Protection: moisture-resistant construction, fluorine coating
• Included: flower-shaped hood, front cap with strap hole, rear cap

Who It's For

If you shoot an APS-C body on any of these four mounts and want one lens that stays on the camera, the 24mm-equivalent wide end covers interiors, landscapes, and group shots, while f/2.8 lets you keep shutter speeds up indoors and at dusk. At 305 g, it suits travel and everyday carry, and the 0.15 m close focus at 16mm adds close-ups with their surroundings in the frame. At the same framing, though, f/2.8 on APS-C gives you about the depth of field of f/4 on full frame, so background blur won't match a full frame 24-70mm f/2.8 wide open. If you need reach past 75mm equivalent, you'll want a telephoto alongside it, and the spec sheet lists no optical stabilization, so steadying the image falls to your camera's in-body stabilization if it has one. Fujifilm X shooters also have the longest wait, until December 17.

Price and Availability

The Tamron 16-50mm f/2.8 A goes on sale October 29 for Sony E at $529 and Canon RF at $549, followed by Nikon Z on November 19 at $549 and Fujifilm X on December 17 at $529.