The lens has a concave front lens - you do not see so often. The processing is similar to the kit zoom, so neat. After some thought, I'm come to the conclusion that the price is justified in view of the optical power and the exposure latitude.
Short Statement PRO-standard focal length 50mm (APS-C = 30-35mm)
Standard focal lengths to 50mm KB have come a bit out of fashion. It simply lacks the effects of unusual viewing angle and perspective of WW and telephoto lenses. But that's what makes, I think, the apparent authenticity of these images. Certainly, one must renounce Some scenes when one goes out with this lens.
But there where it fits, I would like to have no other out of the Sony E-Mount Catalog front of the sensor.
Thoroughly recommended!