Comments about Tiffen Tiffen 52mm 4 Point Star Filter (2MM):

This filter does exactly what it should do. It will cause a bit of negative quality on the image where the star isn't making an effect, so for pictures where clarity down to the pixel is imperative this filter isn't a good choice. The sacrifice will be noticeable if you zoom in, but viewed at a normal size it won't be a problem. I don't have a problem with using it generally.