I'm having trouble getting nice, blue skies in my photos. I don't shoot in direct sunlight (unless there is NO other option... aaaghh... the shadows) and I don't shoot towards the sun. I've tried circular polarizers (hoya) and they don't work for me. Take too long to screw on and off and fumble with to get "just right"- and still I'm not impressed with the results. I use a Nikon D200 and usually set the white balance on auto (in the past I put it on custom, but in the rush and fast pace of things would forget to re-measure, so auto works better for me.) I adjust my ISO between 100 (very sunny) to 400 (darker). My skies are coming out basically white. I like keeping my f# low to get the blurred backgrounds, but it seems if I raise it higher outdoors it will blast out the photo. This doesn't make sense to me- I thought it would be the opposite.