The Tamron 45mm f1.8 SP Di VC USD lens is a fast, fixed focal standard
prime for full-frame and APS-C format DSLRs. The lens provides ultimate
in functionality and operation thanks to its bright f/1.8 aperture
together with Tamron’s renowned VC (Vibration Compensation) Image
Stabilisation system. The lens provides an equivalent focal length of
70mm on APS-C format DSLRs.