Here is a Canon RF 100-400mm f/5.6-8 IS review. One of the less expensive lens…
70-200mm f/2.8 Comparison Review (Canon, Nikon, Sony, Panasonic)
A 70-200mm f/2.8 lens is in the bag of every professional photographer. It’s an important lens and it’s interesting to learn who makes the best 70-200mm f/2.8 zoom len.
Neat video by DPReview TV where the question about who makes the best 70-200mm f/2.8 zoom lens is tackled. Canon, Nikon, Sony and Panasonic in the ring. Let the battle begin. Enjoy.
Reviews about 70-200mm f/2.8 lenses are listed here.