Not as good as expected, according to exchange good (see Update)

The lens is small, light, the AF is very loud but it rather quickly. With the noisy AF I could live if the picture sharpness and color reproduction correspond would be good and that's my main criticism.

Compared with the standard 18-55mm zoom the lens performs poorly. The images that I have made with the 27mm lens, have less details than the pictures, which I made with the standard zoom. The macro is not really useful and with me were trapped dust in the lens available.

I sent the lens back.

Update 4/22/2015:
I got a new lens without dust inclusions, the AF is a little quieter, the colors and sharpness are now much better.