I use my camera for one of two purposes: (1) photographing the details of old, derelict abandoned houses and (2) photographing unknown punk bands in small clubs. I chose the Sigma 24MM 1.8 (4/3 mount) for more flexibility in low light. So far he's done well. I can get some good shallow depth of field macro shots in abandoned houses with low light. And when I'm shooting live groups, I get an extra stop or two, which reduces noise and/or freezes the action with a faster shutter speed. switching from auto to manual focus (but you get used to it) and (2) its random tendency to take a long time to find focus in auto mode. But overall I'm more than satisfied with the results I'm getting with this lens.
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