Technically, it is nonsense to a digital camera to use a UV filter, as digital sensors do not react to UV light. This is absorbed before the image sensor.
Digital image sensors reflktieren significantly more light back toward the lens as it used to be for analogue films of the case. This results in poor optical coated lenses and filters to reflections to ghosting. You have when shooting at night not only the real lantern lights in the picture but more ghosts lamps, so you should check if this is on the lens or filter.
With a bad filter itself increases the risk that recordings are poor.
I bought the filter anyway, since I prefer to polish a filter as an objective glass of 1,500.00. I do not always have a matching cloth case and therefore ever use my T-shirt to clean the lens. Although expensive lenses are excellent remunerated, but still I am not comfortable with that, to wipe directly on the lens.
The Walimex Filter visually
Visually I had so far no problems with the filter. Not even when shooting at night. However, I must say that I even at night always use a sun visor as a lens protector.
On a Nikon AF-S 24-70 2.8 on test chart I could what contrast and sharpness As no difference between "with" and "without" Filter notice.
The Walimex Filter mechanically
Screwing works fine. Nothing warps. The Nikon lens cap with snap on bracket holds even if the filter used.
If I clean the filter, however, there have noises. Thus, the glass does not sit bombproof. In relation to the price of the filter I think it's fine.