Tamron's full-frame 70-300mm with VC and USD — a strong budget alternative to Canon and Nikon telephoto zooms.
The Tamron SP 70-300mm f/4-5.6 Di VC USD (Model A005) was released in 2010 as a stabilised full-frame telephoto zoom for Canon EF and Nikon F bodies, providing Vibration Compensation (VC) and USD (Ultrasonic Silent Drive) autofocus. At 765g and 62mm filter thread it is moderate. Full-frame coverage. Minimum focus distance of 1.5m.
The optical design uses 17 elements in 12 groups. Nine aperture blades. The 62mm filter thread. At 765g the lens is moderate. Minimum focus distance of 1.5m. VC provides approximately 4 stops of compensation. USD motor provides fast, quiet AF. Variable aperture from f/4 at 70mm to f/5.6 at 300mm.
The VC stabilisation at 4 stops provides practical handheld benefit at 300mm: without stabilisation, a minimum shutter speed of approximately 1/300s is required to avoid camera shake; with 4-stop VC, 1/20s becomes viable for static subjects. The USD motor provides fast, quiet AF comparable to Nikon SWM and Canon Ring USM for continuous tracking. For wildlife and sports photographers wanting stabilised telephoto on EF or Nikon F bodies at moderate cost.
On the used market the Tamron SP 70-300mm f/4-5.6 Di VC USD is affordable as a stabilised full-frame telephoto zoom. Condition checks: VC engagement, USD AF response, 62mm front element for marks, zoom ring smoothness. Compatible with Canon EF or Nikon F bodies depending on mount version.