The filters come on my Canon 600D used, thereby in different diameters on all 3 lenses (wide-angle zoom, normal fixed focal length, telephoto zoom, all Canon original). The combination UV / Polarizer is each fixedly mounted, the UV filter does not generate flares as elsewhere reported, if necessary, reduces blue haze and does otherwise nothing. The polarizing filter is very effective, as I have already stated many times when taking pictures by coach discs. Also reflections on the sea water can be worked out or suppress good as required. The comparative results of other passengers (without this filter technology) were often frightening in the points described. The FLD filter I have not yet been used, the addition of a cap is also quite useful because you can lose this before. Overall, therefore, highly recommended, especially for this price, and therefore 5 star, Joe.