I purchased this lens because I was tired of using manual focus lenses with adapters. I have recently been to Myanmar with the A7s and a Leica 80-200mm F/4.0 lens. The Leica did produce quite exceptional results, but I experienced a lot of critical focus misses. This is the rub of MF lenses. So, here we are with some initial thoughts on the Sony FE 70-200mm OSS F/4.0 G Lens. The lens is white along the lines of the Canon telephoto lenses. It is a relatively light lens for its focal length range, and so far the AF seems to be quite quick.