Sonyalpharumors.com has a photo of this new pro sports lens discovered out in the wild (https://www.sonyalpharumors.com/sony-400mm-f-2-8-versus-canon-lens/) . At over $10,000 each probably the only buyers will be pro sports shooters (and a few old rich guys, of course). Looks like Sony is serious about the sports market. I’m guessing at some point if the market materializes for them they’ll put out a 600mm f/4. Of course, they might get some competition from sigma. They’ve got some telephotos and unlike with wide angles the long lenses would easily adapt onto the e-mount with no need to change the lens formula. Should be an interesting situation for the Canon and Nikon pros. I’m sure being able to use the no-blackout, 20 frames per second A9 for football or soccer would be a very tempting choice for the guys who do that for a living. Good work Sony. Now let them come out with the A7 III. I hope it has the same good autofocus as the A9.