Tamron SP 15-30mm F/2.8 VC G2 Lens for Canon

If you need a f/2.8 aperture but can't stomach the thought of paying a $1000 more for a Canon or Nikon (for the nikon mount version) this is a seriously good option. Designed for full frame Canon DSLR's such as the 6d's and 5d's 5ds's.