|Canon EF 70-200mm f/2.8L Lens|
Canon is probably discontinuing the EF 70-200mm f/2.8L lens soon. I have used this lens for a long time and have upgraded it through the years to the current model, EF 70-200mm f/2.8L IS II. Together with the EF 200-400mm f/4L IS USM Extender 1.4x lens (my review here) and the EOS-1D X camera, it makes a Wildlife photographer's dream combo because it covers all the important focal lengths with the best available glass. You can read my article on Canon's lens recommendation.