Introduction The Tamron SP 45mm f/1.8 features Tamron’s Vibration Compensation (VC) system that offers up to 3.5 stops of image stabilization — enabling, in theory, sharp shots of relatively static subjects using shutter speeds as slow as ¼ second. Note that VC is only available in the Nikon and Canon versions of this lens, as it’s not needed in the Sony version (as Sony cameras offer camera-based image stabilization).Other features include Tamron’s USD autofocus motor for quick and quiet AF, as well as a minimum focus distance of just 29cm, with a maximum magnification of 1:3.4