I am as big a fan of Canon's lenses as anyone; I resisted the temptation to switch brands for years simply because they offer certain lenses that I can't imagine not having. When it comes to the new RF 800mm f/5.6 L IS USM and RF 1200mm f/8 L IS USM lenses, however, you should really think twice before you buy them.
[ Read More ](Originally posted by Alex Cooke)