Just got the new Olympus 17mm from B+H. Figured I'd post some comparison shots. Naked lenses: With Filters (chrome B+W UV's): Note that I put the more slim olympus micro four thirds back caps on both lenses. Top View: Yes, the Olympus is smaller in diameter. E-PL5 with Panasonic 20mm E-PL5 with Olympus 17mm And here it is from top view. Shots through the lens to come.