Words don't do this lens enough justice. But "Best Lens Ever" is pretty close. It does everything as advertised and takes excellent photos. I am very happy with my purchase.
I was extremely pleased with the IQ of the Sony Primes vs the zooms lens. They are very expensive but less than Nikon. If you can justify the cost you will see a noticeable difference in IQ from the primes.
I love every about the Len Except for the lens hood. It would be a lot better if it was like the Minolta 600 lines that I had at one time, the Lions hood slid back it did not come off the lens I really like that all you had to do was slide it back and twist it and lock it on and then put the lens cover on.
Being a wildlife and bird photographer, this lens is amazing. Tack sharp with the 2X teleconverter. Mostly use it on the 7RIII with sharp and fast focus. The lens takes Sony to another standard. I am waiting for the 600 to be a available since sometimes I need a little more reach.
I bought the 400mm lens for the sole purpose of shooting local sports, and I have been very pleased with the results in combination with my 24mm GM and 70-200 GM. To top that off, I just placed a deposit for the 600mm and can't wait to receive it!
I would recommend this to a friend!
Response from sony.comBy Sony North America Customer Support, February 13, 2020
Hi, throdown!
We are happy to hear that you are very pleased with your new Sony lens. You chose the best brand! Thank you for the feedback and for trusting Sony!