Tamron Responds to Sigma’s 20-200mm Lens With a 25-200mm f/2.8-5.6 Full-Frame Zoom

Only a handful of hours after Sigma announced the 20-200mm f/3. 5-6. 3 DG Contemporary lens for full-frame E-mount and L-Mount cameras, Tamron revealed that it's working on a 25-200mm f/2.