Extremely sharp and compact pancake lens for street photography.

The lens is razor-sharp and so lightweight that you feel like you don't even have a lens on the camera.
According to all the reviews I've seen, it is sharper in the center than even the much more expensive Zeiss lens.
At f/2.8, it is already good, but at f/4, its sharpness is outstanding.
It is a full-frame lens, which is impressive considering its small size.
It vignettes quite a bit on a full-frame body, but there is no issue on a crop body.

Personally, I mainly use it on my a5000, and it is a super lightweight setup for street photography.

I would have liked it to be a bit faster in terms of autofocus

I had been saving money for months for the Zeiss 35mm until I happened to try this one. Better if not equal to the Zeiss with much less money. Sharp at all apertures and extremely lightweight. Highly recommended.