Hello. I can't decide what should i buy for landscape and for general use sometimes. I have already Olympus 12-50mm kit, Olympus 45mm 1.8 and PL 25mm 1.4. I think about selling kit lens and buy Olympus 12-40 pro lens 2.8 or Olympus 9-18mm. I will use it mainly for landscapes but getting 12-40 will give me some more versatility. How those lenses perform in 12mm ?Is 9-18 good at wide angle ? or i will use it at 12 anyway? Any kind of help or advice will be nice. Sorry for my english but its not my native language PS. I have in mind also 12mm 2.0 but its not either universal and its not wider than 12-40. Can you compare those in sharpness and contrast? Is it worth to get 12mm 2.0 instead of 12-40? Thanks.