just a few of my shots from my recent trip to Kos. 1st time playing with my new Cpol filter. Enjoy (or not ) please c+c if you like, need all the help i can get. 1. 2. Couldn`t get a nice 90 degree angle here, hence sky is ruined a bit 3. Horizon fixed. 4. 5. Also, a question to finish. On really wide angle shots (with this lens - 18mm) i noticed with cpol filter if i get a good deep blue coming in for the sky i also get very dark corners (vignetting? ) I think i understand why this happens, but how would i cure it?