A 12-20mm f/2.8 That Bends the Rules of Ultra Wide
A 12 to 20mm zoom range on a full frame camera pulls in a field of view most lenses can only dream of, and pairing that with a constant f/2.8 aperture opens doors for astrophotography and low-light work. Tamron built its new 12-20mm f/2.8 around exactly that combination, and it arrives with a shorter name and a longer feature list than the brand's older lenses.