Sony Sonnar T* 135mm f/1.8 ZA Reviews

Exceptionally sharp and contrasty as you might expect. Due to the long focal length and wide open aperture, focusing accurately at close subjects is difficult (recommend the type M focus screen).
Lens is heavy and solid in build. Focus is very smooth and has a wide mechanical range.

It's a wonderful lens, they are just two points that make me not giving 5 overall, it's very big and if you want to be unperveveid, it's not easy, people who see this big black eye are suspicious…
His close minimum focus distance is perfect for proxiphoto, insects, flowers etc.
The price is normal for such a quality lens, you have to look by Leica for example…