Hello, I have just bought myself a Fujifilm S5500 for an upcoming safari trip. I understand that a filter would be a good idea for protecting the lens and helping with the bright sunlight however I'm a little confused as to the differences between the various types and when they should be used. I have been advised in one shop that I need a UV filter and in another that a Skylight would be best. If I remember correctly, Polarising was also mentioned... What effect do these have on the photographs and can they be used at all times or only in certain situations? Any help and advice would be greatly appreciated before I run out and buy one at random or indeed all of them. Thanks.