Hoping some of you have these lenses (or have tried them both) and can help me decide. I'm looking for a wide-angle lens, and at this point have ruled out the Panasonic 7-14mm for being too big, too expensive, and being unable to take filters. I'm planning a few trips this year (Japan, Hawaii, northern BC and possibly a road trip down the coast to California) and would like something for scenery, landscapes, and smaller spaces. I currently own the PanaLeica 25mm and Oly 40-150 so I haven't considered any of the other zooms for the sake of not having any overlap in my kit, plus the fact that I like the small size of both of these. My reasons for leaning towards either are as follows: 9-18mm Versatile focal range Lower price (although the difference may not be enormous as I'll have to buy new filters) 12mm Greater capacity to shoot in low-light situations without a tripod, etc. Takes the same filter size as my PL25 I have no idea what to do. I keep making up my mind and changing it. I wonder if I'll really miss the range of the 9-18 if I go with the 12, or if I should go with the 9-18 because of the great wide angle shots possible at 9mm and I'll have my lower-light situations covered with my PL25 (but then what about night time city shots, especially for Japan?)...argh...help!