Tamron has taken the wraps off two new lenses – the full-frame SP 70-200mm f/2.8 Di VC USD G2 telephoto and the APS-C-only 10-24mm f/3.5-4.5 Di II VC HLD wide-angle zoom – both of which are greatly improved versions of popular existing optics.With the 70-200mm, Tamron is looking to improve on one of our favourite telephoto zoom lenses, and the next-generation...