9 out of 10 points and recommendedIncredible build quality, high image-quality, great fun to use.Not cheap, relatively heavy and large, of limited use.
The first thing I noticed with this lens is it's incredible build quality. The barrel is all metal, it is weathersealed, there's a nice metal lenscap, and it simply says "quality item" from every angle. The downside of this is that it is relatively heavy, and large-ish. (especially for a 4/3 lens)reviewed December 24th, 2006
Optically this lens is very good; it focuses very close too, which is useful with a fisheye. The downside is there's some purple fringing in high-contrast areas on the edge of the frame, but this seems hard to avoid with fisheyes. The effect becomes less with the aperture stopped down a bit. Flare-resistance is truly excellent.
The huge 180-degree angle of view is great fun to use, but the fisheye-distortion may make this lens of limited use to some people; but, the images can be "de-fished" automatically using Olympus Studio software, which makes this lens into a normal superwide.
The price is high, but considering the good build-quality and good optical quality not outrageous. The results are unique, and it can be a real "problem solver", or simply a very nice toy...