Hello Fellow Photographers, I am starting to get a hang of a 60d, as I am shooting exclusively in Manual, AV, and TV modes respectively. I am experimenting with different ISO, shutter speeds, and aperture settings, so I would like to shake things up a bit and experiment with filters. I started researching the use of filters and I have found informative material regarding the different filters and their purposes. My understanding is: a filter will not inhibit a bad photo, but it brings out the best in a correctly taken photo. After more research, there are several filters which create different affects with different lenses. Now to my questions: 1. I want a filter to enhance the color of my landscape photos, so should I buy a polarized filter exclusively? 2. Will a polarized filter enhance photos of humans and animals? 2a. Also, does a polarized filter only affect colors such as blue, green, or red? The photos I have viewed when a polarized filter was used were not portraits of humans or animals. Hence, I want to know if a polarized filter enhances whites and blacks? 4. I seek "an all around filter" for a particular lens, lets say the lens is a Canon 70-300mm f/4-5.6 IS USM. It appears that being a photographer requires the use of "one of filters" for different desired results. Of course, excluding the different sizes of filters for particular lenses. 5. Is the advised method for experimenting with filters to purchase them blindly? If I am burned with a filter so to speak, do filters hold their value in the marketplace? I think I maybe asking too many question, but the people who post in the photography section are first class! Thanks for the help, as all input is appreciated.