Summary: The best 24mm lens(in 35mm format)with high image quality and construction. At f/2, it is possible to shot handheld in the night. However, the lens is considered expensive. If you are a zoom lens fan goes Lumix 12-35/2.8 or 14/2.5 for much more economic choice.
Summary: I have taken a number of really NICE shots with this little bugger ... some should be in the Gallery if you want to check them out. Or go to 500px.com/Kawhona to check out a variety of shots done with my E5. Complaints hey yes for a lens of this price you should get a hood and a little bag. Olympus brass are being cheapsakes but, hey they are selling them so why take the margin hit.
Summary: Metal construction, fast maximum aperture, snap ring for manual focus, great focus feel, zone focusing, and my favourite focal length. Not surprisingly I use this lens a lot. Optically it is not quite the star that the 45 is, with some vignetting, and a trace of soft corners wide open, quite high levels of distortion, and only very good, as opposed to stellar, resolution. However, all these need to be taken in context: it is still very good indeed.