Re: Brief Comments on the 200-600 with A7R4 (Harlequin Duck)
I happened to run into Art Morris shooting pelicans at La Jolla Cove this afternoon. He is a very well known bird photographer who has migrated his whole kit to Sony.
I asked him about the Sony 200-600. He shoots it regularly on his a9/a9II bodies where he says it is an excellent lens. However, he says he has tested it extensively on the a7RIV and found it all but useless on that body. Completely unreliable autofocus. He said he has posted about it thoroughly on his blog. I have not had a chance to go there and read the posts, but though you all might find it useful.
