Charles A. Nakell
Some versions are poorly functioning so be sure to immediately run your lens thru all reasonable testing protocols. I had to return mine as it far, far underperformed the expectations set by other reiewers and Sony (both of which I believe). I am a seasoned photographer that tried all kinds of setting variations, but to no avail. Deeply inconsistent capture quality. I really wanted to love this lens...but mine (I assume) was a one-off lemon.