Personally, I need mainly to UV and, depending on lighting conditions, the polarizing filter. For the neutral density filter, I previously had no use.
About the used filter (UV and Pol), I can not great, negative reports.
They do their job to my satisfaction. On the computer, I can see no distortion or blurring of images. Possibly Reflections are well filtered. Colors and brightness are not visible influences.
Only the thread seem to be, as the screw on the lens (Tamron) is somewhat tricky, somewhat inaccurately or with a slight "imbalance". But with a little practice, it works then quickly and easily.
For the amateur photographer, I can recommend the filter.
