Regarding 20mm, sorry can't edit title... Hi all, sorry for starting another lens advice thread, but I am suffering some severe GAS lately. My current gear includes E-P1, Pana 14/2.5, Sigma 30/2.8 and OM Zuiko 50/1.8. I have been very happy with this setup for use around town and general travel photography and am happy to zoom with my feet. I am also happy with the 28mm to 100mm equivalent range I have currently. However I recently discovered a shop near me has a Pana 20/1.7 for €EUR229, or maybe less, and I am seriously considering it as: 1. a bright autofocus lens (have been using 50mm for low light but find MF with 50mm hit-and-miss on E-P1) 2. a small-and-light lens for travel and street use (I love the Sigma 30mm, but find it a little on the large side for walkaround, while 14 is often too wide) 3. and, I'd like to give something close to 35mm a try. I am on a tight budget and buy used when I can. A friend has advised me to give it a miss, as I would be very disappointed by AF speed when compared to the 14 and 30 I have. In terms of light gathering, I hope to upgrade to OM-D in the next year or so, so perhaps the better ISO here would give me the same light gathering advantage of 2.5 or 2.8 to 1.7? I guess my question is, would the Pana 20mm still be a relevant buy, given it's AF speed and the fact I'll probably get a newer-sensor camera in the near future?