The Tamron SP 150-600mm F/5-6.3 Di VC USD lens was awarded by TIPA as Best Expert DSLR Lens. TIPA’s motivation:
The Tamron 150-600 mm lens, for full-frame and APS-C DSLRS (with 1.5X magnification factor) incorporates VC (Vibration Compensation, Tamron’s image stabilization technology), a fast USD (ultrasonic silent drive), and eBAND (extended bandwidth and angular dependency) coating, for flare and ghosting reduction. The lens employs 20 elements in 13 groups, with the front group containing 3 ED glass elements. The circular, 9-bladed diaphragm provides exciting bokeh effects and maintains the circular shape even at 2 stops down from maximum aperture. The included SILKYPIX Developer Studio for Tamron uses optical data to correct any distortion, light falloff and chromatic aberrations.
The Tamron sells for $1069 (pre-order for now) and offers a lot of bang for the money. Good sharpness, a great telephoto range, and accurate and quick auto-focus are among the highlights of this lens.