I have purchased 3 of these lenses. I use them for two-camera shoots as well as for everyday good-to-go lenses. A bit less sharp on the edges, but coupled with the a1, well it does what I would expect and I am very satisfied. Not a G-lens, but good results.... Read More  Hide

I was so excited to get this lens. It fit my needs perfectly. Unfortunately it didn't fit the camera perfectly. Basically the mount on the lens is made from an inferior material that hasn't been accurately machined or heat treated. (I'm an Aerospace Quality Manager and I know a little bit about this type of thing) There is an unacceptable amount of play in the locking mechanism. Using the telephoto ring causes the play to be very noticeable. And as you turn the ring back and forth over time, the locking pin pushes into the metal on the lens mount pushing metal up and widening the slot for the pin. In the one month I had it, that slot continued to widen. Yes I returned it. For this price, the mount must be hardened stainless that should be machined to a tighter tolerance and fit snugly. If they fix this problem I will buy it in the future. But I will take a close look before I do.... Read More  Hide

Focus slow sometime I took the pictures not sharp,need updates version.

I bought this to have flexibility on travel with just 1 lens. On the whole it is an ok lens. My biggest difficulty is the minimum focusing distance.