Tamron has just announced one of its most ambitious ultra-wide-angle lenses yet: the 12-20mm F2.8 (Model A084), a fast-aperture zoom built for full-frame mirrorless shooters on Sony E-mount and Nikon Z mount. It's a lens designed for the moments when "wide" isn't wide enough — sweeping landscapes, tight interiors, and the kind of astrophotography where every extra degree of view (and every extra stop of light) counts.
Here's why this one is worth getting excited about.
Beyond the Scope of Vision: True 12mm on a Full-Frame Zoom
The headline feature is right there in the name — a genuine 12mm to 20mm zoom range with a constant F2.8 aperture from end to end. At 12mm, the field of view is dramatic enough to take in an entire scene in one frame, making this lens a natural fit for architecture, interiors, and expansive landscapes. Hold the bright F2.8 aperture all the way through the zoom range, and you've also got a serious astrophotography tool — one that Tamron is positioning as the new go-to