I'm not sure if its user error, but it seems as though my e-p3 only focuses slightly better in low light vs my older e-p1. I turned off the AF assist light because it tends to be distracting. The AF seems to hunt terribly in low light. I use the 17mm 2.8 most of the time when I shoot. When I tested the speeds, I used the 17 for a straight test between the two bodies. The light metered approx 1/40th at 2.8 with iso 1600. The e-p3 hunted, but usually found focus. The e-p1 struggled, and even gave up a few times. Maybe I'm asking for more than either one of these cameras can deliver in such low light with a slow lens. So the question is, do I go for a better pen, a panny, or a faster prime (17mm 1.8 or 20mm 1.7)?