This lens is about two to twenty times heavier, and up to a hundred times more expensive than most great standard lenses. Find out why it still can be a good idea to buy it. Warning: don’t read this if you own a Leica Noctilux 50mm f/0.95, a Canon R 50mm f/1.2 or a Nikkor 58mm f/1.4 G. You’ll find it in the menu under test, or simply here.