I tested the filter in the Sigma 18 ~ 250 to the Nikon D5000 with a Hama UV 390 C 72 mm (VII). On the packaging is "paid", but not on the filter. In an image even the square slats of the lens reflected. I also have the impression that the images with attached filter effect even slightly milky. It can surely not be that one always has to unscrew the filter and backlit conditions to achieve good results.
The Hama-filter were better before. There was also HMC and super HMC remuneration.
Now I have to bite and buy myself a Hoya filter which hopefully missed my pictures no freckles and the bullet "price apple".