Help reduce flare and keep your Tamron 150-600mm f/5-6.3 SP Di VC USD G2 for Canon or Tamron 150-600mm f/5-6.3 SP Di VC USD G2 for Nikon more protected from the elements with this replacement HA022 Lens Hood from Tamron. The hood’s primary function is to block stray light from entering the lens, helping to eliminate flare and increase contrast. It also serves the secondary purpose of protecting the front element from bumps and scratches, since it extends out from the front of the lens.