I run the filter on the Sony NEX-7 with Digital focal lengths 18-55, 28 and 55-210 mm it still screwed onto a UV filter. Even in the case you can see in the photo no edge of the filter, as I wanted to. But the effect of the filter is not too strong, the filter darkens rather more from. In the photos I can see no deterioration of image quality even when significantly enlarged. The rotating ring can be gently and gkeichmäßig turn at good dose resistance, makes here by the "hydraulic" spinning sensation a very good impression. I would buy the filter again.
