This is the widest lens I have for the FF cameras I now own and I must admit it's very difficult to achieve good images with it. It takes a lot of practice with a wide angle lens because fore, middle and background must have something that fills the frame. I don't think I've achieved the stage where I can use this lens with any degree of confidence. I have a long way to go. Looking now at this image I also have to admit it could do with a good clean.
I used this lens quite a bit on the Nex-5N but only for B&W conversion on the Nex-7 because of the colour cast problem. This will show it's face again on the Alpha cameras, be certain of it. The weather being very bad at present, testing this lens isn't really an option, I would only get soaked and the equipment as well.