The SP 70-300mm F5-5.6 Di VC USD (Model A030) employs Tamron's esteemed image stabilization mechanism-VC (Vibration Compensation).
VC is an abbreviation of Vibration Compensation. With VC, the photographer has the freedom to shoot at a shutter speed an extra four stops slower without having to worry about blurring. This makes capturing handheld, evening, night, and interior shots much easier.
The actuator and algorithms, developed in-house at Tamron, provide the power that gives VC it's excellent tracking performance and smooth, stable viewfinder image.
Tamron's VC mechanism employs a three-coil system, whereby the three driving coils activate the shake-compensating VC lens groups electromagnetically via three steel balls.
The VC lens elements are held in place only by contact with the steel balls,achieving smooth movement with little friction, helping to eliminate the blur from camera shake for clean shots at night or indoors, or in macro and telephoto photography situations. Handheld was never this easy.