Tamron 12-20mm F2.8 (Model A084) Ultra-Wide Zoom Lens

The Tamron 12-20mm F2.8 (Model A084) pushes ultra-wide into genuinely new territory, starting at a dramatic 12mm and holding a constant f/2.8 aperture right through to 20mm. That 12mm end captures a scale most zooms simply can't reach, making this lens a natural fit for astrophotography, sweeping landscapes and tight interiors alike.

A sophisticated optical design — built around expanded and standard glass-moulded aspherical elements alongside extra-low and low dispersion glass — keeps the image sharp from centre to corner and reins in the sagittal coma flare that often trips up wide astro lenses. Despite that optical ambition, Tamron has kept the barrel compact and light enough for all-day handheld shooting.

Features

• Constant f/2.8 aperture across the full 12–20mm range, for consistent exposure and shallow depth of field at any focal length
• Advanced glass-moulded and low-dispersion elements correct sagittal coma flare and colour fringing, ideal for nightscapes and astrophotography
• High-speed VXD linear motor autofocus — fast, precise and near-silent, suited to both stills and video
• Close focusing to 0.18m at the wide end for dramatic near-far compositions
• Compact, lightweight build that keeps this ultra-wide zoom comfortable to carry and shoot handheld
• Integrated flower-shaped lens hood (built-in, non-removable) for flare control and front-element protection
• 12-blade circular aperture for smooth, natural-looking background blur
• Compatible with the TAMRON Lens Utility and TAP-in Console for firmware updates and custom AF fine-tuning