It's a bit of a mouthful, but Tamron has updated its fast 24-70mm zoom lens – meet the SP 24-70mm f/2.8 Di VC USD G2 (Model A032).So what's new? The lens features a new Dual MPU (Micro Processing Unit) that are said to provide rapid autofocusing with improved accuracy. The SP 24-70mm f/2.8 Di VC USD G2 also promises to deliver the highest vibration...