I have been using an Olympus 9-18 lens for some landscape photos at some of the US National Parks and have been so pleased with the extra width that it gave me over my 12-40 that I was thinking about buying a 7-14 to use instead of the 9-18. I have looked at the online specs of the Olympus and the Panasonic and, aside from the Olympus being slightly faster (f/2.8 vs f/4) than the Panasonic I was wondering if there were any other significant differences. The Panasonic is almost half the price of the Olympus, so perhaps someone who has used both or knows about both can give me some guidance here. Budget is always an issue with me, but I will be trading my Olympus 12-100 in for it, so neither lens is totally out of the question. If you were thinking about getting one of these which would you get? And why? I would be using one of these on an E-M1.2, if that makes any difference. Thanks.