I have made no secret about the fact that I think the Sigma 30 is a very good lens. I've had of three of them each time coming to the conclusion that it's not for me because I prefer MF to AF but a very good lens nor the less. During this past Sigma sell off in advance of the new models arriving I picked up a Sigma 30 and a Sigma 19 (although I bought them separately, I got the deal prices). The Sigma had been sitting unused like it usually does because I use my Rokkors, Vivitar or Pen-F lenses instead. Today I thought I'd take the Sigma out and make the best of it I could. The first part of the day went about the way it always does then something happened. I was shooting an image of a couple of spiky leaves against a very busy background and the Sigma kept trying to focus on the background. Not too surprising. I've seen this before on a number of cameras so I didn't really feel it was some sort of serious flaw, just a bother. So I decided to manual focus it instead. I'm not at all sure that I have even attempted to do this before (surprising given my affinity for legacy lenses) and much to my surprise it worked wonderfully. Now the Sigma is a focus by wire and it's not anything like focusing a manual focus lens but even with that handicap there were somethings that made the experience fun. The Sigma peaks really well and I had never noticed that before but when you start to MF, the auto magnify kicks in, and viola you can quickly focus. Also, you can tweak it so the AF realizes what you ARE wanting to focus on and then the AF kicks in to help. Finally, the AF speed is a lot better than I remember it being. The reason I think is the fact that I updated the firmware on the 5n to 1.0.2 (I had just updated it to 1.0.1 a few weeks ago) and in all honesty I found the AF to be perfectly acceptable for a day of walking about with my son grabbing shots fo whatever caught my fancy. Then I get back and was reminded that the color the Sigma produces is very VERY pleasing and it is one SHARP lens. The image below is from this morning. Render Unto Caesar by dixeyk, on Flickr THIS is a 100% crop of that image. Tell me that aint sharp. This was 1/60th @f3.2 - ISO 500 The Sigma is a real pleasure to walk around with. It's reasonably fast (now), the IQ is terrific, and while it might not be the handsomest lens it's way better than it has a right to be for $100. IQ wise I think it's every bit as good as my Pen-F 38. It's not as fast but I wouldn't at all surprised to see it match the Pen 38's sharpness at all the apertures they share. AND...if you fancy manual focus it peaks well and if you're willing to deal with focus by wire it can pretty fun. Having come from m43 prior to the NEX I would even go so far as to say that the Sigma 30 is almost as sharp as the Olympus 45/1.8, has similarly nice OOF areas and better color than that much loved lens at $200 less. I'm looking forward to the 19 getting here sometime next week. If it performs as well as the 30 I could see them being great travel kit. In fact I have some traveling for work coming in the next few months. I'll put it to the test and report back. I think I'll keep the Sigma 30 this time. No more selling it off.