Summary: Highly recommend the Olympus M.Zuiko 17mm f/2.8 Lens because it performs as described, an excellent, small in size, aim and shoot lens especially suited for spontaneous street photos or for staged compositions.
Summary: This lens doesn't get a lot of respect, especially when compared to the legendary Panasonic 20mm/1.7. Even so, it's probably on my EM-5 90% of the time. For me the 35mm equivalent focal length is the perfect size for street and indoor photography, I found the 20mm Panasonic (40mm equivalent) focal length was just a little too long for me in that regard.
Summary: I got this lens for my Panasonic GM-1. At first, on the Internet, this lens is underrated but somehow once I recieved it tested it, this lens produce very sharp images. Personally I think handling and rotation of the lens is quite nice. Although it is bit noisy when autofocus, but it does give a good job. If you are a student and you don't have budget on f1.7, I would recommend this. A&R photo is kindly to provide a lens hood, and all accessories you need.
Summary: ------------ Bottom-line ------------ This lens embodies an excellent balance between optics and performance -and the final result is excellent. ----------- Details ----------- Forum junkies will tell you that resolution is ok, and that it has some "noticeable" distortion. For them, this lens wouldn't get more than 3 stars. Let them be. Photographers -on the other hand- will find an excellent balance between optics, size, and overall performance.