Summary: I recently upgraded to the Sony 100mm f/2.8 macro from the Sony 30mm f/2.8 macro lens. What can I say? I love it! I use this lens coupled with my Sony A77 and the results have yet to disappoint. I will say- manual focus (for me) works a lot better than relying on the auto focus. Although the AF is relatively silent, it seems pretty slow and "focus hunts" a bit more than I'd like.
Summary: If you want to see the world you cant see with regular lenses, then this lens is for you! I love taking pictures of bugs and flowers in macro. When your friends see it they are amazed. I even got a picture of a mosquito's shadow with this thing.
Summary: This is my 5th Sony lens purchase. I always shop less expensive brands like Sigma but inevitably come back to Sony. If nothing else, I expect Sony's a65 firmware to correct many minor lens flaws. Reading reviews I feel Sony lens are a tad better but I've never tested other brands to verify this for myself. I can say I've never been disappointed in a Sony lens.
Excerpt: I use this on both A77 (effective 150mm) and A99 bodies for pro landscape and bird photography and it produces shockingly sharp images. Yes, the autofocus is slow and noisy but it doesn't matter to me because manual focus is so sure and easy (really the best approach to most macros). Light and bright, it is sharper than the Carl Zeiss 24-70mm which is really impressive.
Excerpt: I have been using it to take pics of flowers and also got a close up portrait of my dog. Quality lens and the pics turned out great. Do make sure to use the focus limiter - makes focusing so much easier. I haven't come across any cons yet.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged, Strong Construction