The Tamron SP 24-70mm f/2.8 Di VC USD G2 lens undercuts similar zooms on price and delivers strong image stabilization, but it makes some optical compromises to get there.
Sharp results at f/2.8 at wider angles; Strong image stabilization system; Excellent build; Dust and splash protection; Available for Canon and Nikon SLRs; Low price.
Image quality suffers beyond 50mm; Noticeably dim corners; Chromatic aberration at 24mm; Some visible distortion.