Lion at the zoo. The pro lens (100-400 Mark II) on the left greatly outshines the consumer lens (75-300) on the right, even on a much older body (Canon 30D vs Canon 7D mark II).

IMG_6352-Edit-2---by-J-M-Hoffman

(From "Lens Versus Body: The Definitive Answer (Part 1).")

Lion at the zoo. The pro lens (100-400 Mark II) on the left greatly outshines the consumer lens (75-300) on the right, even on a much older body (Canon 30D vs Canon 7D mark II).