The filters do a very good job and are universally usable on every lens. They are rotated and displaced and thus optimally adapted to the circumstances. Have not tried to use multiple filters at the same time. In the container, the filter rattle unfortunately something. There is still a filter more space in the container (ie a total of four). Can not make a comparison with cheap imitators, as I prefer a bit more expensive to buy and why am completely satisfied. Adapter rings must be ordered separately (here we can perhaps buy a cheap set, if you want to use many filter diameter).
