«Smaller lighter and cheaper” the 1.2’s are just barely thoughIt does seem like an absolutely amazing lens for events shooters. If I was a pro shooting events, I couldn't wait to get my hands on one! Still, given its size, weight and cost, I doubt I will ever own one myself. For a walk around lens I would want wider, smaller and lighter. And for other situations I can use primes which are smaller, lighter, cheaper, and have a wider aperture to boot.