After reading a blog multitudes problems encountered by our photographer friends to find a uv Fitr (optical protection) for the wonderful fuji x20, I was not really convinced of the compatibility of this filter. In short, this is the top, no problems of screw, it can be screwed to the bottom, no any impact on the image, and in addition a objo cap. teats before ... Well, but happiness for the maniac that I am ... Look no further ... This is the one there, eyes closed. Regards to all. ps: Congratulations Amazon, too, still performing ...