Tamron 12-20mm f/2.8: A New Fast Ultra Wide Angle Zoom for Sony E and Nikon Z Full Frame

Tamron has announced the 12-20mm f/2.8, a fast-aperture ultra-wide angle zoom for Sony E-mount and Nikon Z mount full frame mirrorless cameras. The Sony E-mount version goes on sale July 30 at $1,699, and the Nikon Z mount version follows on August 27 at $1,799.

The lens covers a 12mm to 20mm focal range and holds a constant f/2.8 maximum aperture across the entire zoom. Tamron is positioning the wide 12mm end and the bright aperture toward astrophotography and interior work, where both the extra field of view and light-gathering matter.

The optical formula uses one XGM (eXpanded Glass Molded Aspherical) element, three GM (Glass Molded Aspherical) elements, and several other special elements. Tamron says this arrangement suppresses peripheral blurring and color fringing and corrects sagittal coma flare, a common problem in astrophotography that smears point light sources near the frame edges. The design is intended to hold sharpness from the center out to the extreme corners.

The Sony E-mount version measures 4.7 inches (119.3 mm) long and weighs 20.2 ounces (570 g); the Nikon Z mount version is slightly larger and heavier at 4.8 inches (12.1 cm) and 1.3 pounds (585 g). Despite the compact size, it carries the switches and rings expected on a professional-grade lens.

Autofocus is driven by Tamron's VXD (Voice-coil eXtreme-torque Drive) linear motor. The minimum object distance is 7.1 inches (0.18 m) at the 12mm wide end, giving it usable close-up range for a lens of this class.

Key Specifications

• Focal length: 12-20mm
• Maximum aperture: f/2.8 (constant across zoom range)
• Lens construction: includes one XGM element, three GM elements, and multiple special elements
• Mounts: Sony E-mount and Nikon Z mount
• Format: full frame
• Diaphragm: 12-blade circular aperture (stays nearly circular up to two stops down from maximum)
• Autofocus: VXD (Voice-coil eXtreme-torque Drive) linear motor
• Minimum object distance: 7.1 inches (0.18 m) at 12mm
• Length: 4.7 inches (11.9 cm), Sony E-mount; 4.8 inches (12.1 cm), Nikon Z mount
• Weight: 20.2 ounces (570 g), Sony E-mount; 1.3 pounds (585 g), Nikon Z mount
• Hood: integrated flower-shaped hood (non-removable), with locking front lens cap
• Filter: integrated rear filter holder
• Software: compatible with Tamron Lens Utility
• Weather protection: moisture-resistant construction and fluorine coating
• Price: $1,699 (Sony E-mount); $1,799 (Nikon Z mount)
• Availability: July 30 (Sony E-mount); August 27 (Nikon Z mount)

Additional features include a 12-blade circular diaphragm, Tamron's "Toned Profile Next" exterior design, an integrated flower-shaped hood with a locking front cap, an integrated rear filter holder, and a soft wrapping cloth for scratch protection. The lens is compatible with Tamron Lens Utility for customizing controls and firmware for both stills and video.

Why This Matters for Photo and Video Creators

An ultra-wide zoom that starts at 12mm and holds f/2.8 throughout addresses two jobs that usually force compromises. For astrophotography and nightscapes, the wide field captures more of the sky in a single frame, and the constant f/2.8 keeps exposures shorter, which limits star trailing and reduces the need to push ISO. The corrected sagittal coma flare matters here specifically because uncorrected wide lenses render edge stars as smeared, winged shapes rather than clean points.

For interior, architecture, and real estate work, 12mm pulls in tight rooms without the photographer backing into a wall, and the bright aperture helps in dim spaces. Video shooters gain the same wide perspective plus the low-light headroom, and Tamron Lens Utility compatibility allows control customization that suits run-and-gun or hybrid workflows. The compact size and roughly 20-ounce weight also make it more practical to carry for landscape and travel use than many lenses reaching this wide at f/2.8.

The 12-20mm f/2.8 enters a segment where fast, genuinely ultra-wide full frame zooms are still relatively uncommon, and it does so at a price notably below first-party equivalents from Sony and Nikon. Whether the optical performance holds up to Tamron's claims will be settled in real-world testing, but on paper, the combination of a 12mm wide end, constant f/2.8, and a body under 600 grams gives astrophotographers, interior shooters, and hybrid creators a compelling reason to take a closer look.

The Tamron 12-20mm f/2.8 is available for preorder at B&H.