After much deliberation I bought my UV filter (52/58/67 mm) as protection for my precious Nikkor. Rodenstock - a household name that is already fit. I thought to myself. But the 67mm filter was inserted into the surface treatment almost a 1 mm wide inclusion. So back to Amazon. Let's see how the replacement looks. Thought actually that a brand like Rodenstock quality controls carried out ... Well, a blip. The other two filters were spotless.
After such always easy replacement through Amazon - big thank you for it! - The replacement is now relentlessly. 4 stars. A I have to keep to the exchange.