I purchased this for a camera that I seldom use. It still is a valuable collectors item that I want to keep in excellent condition and that means I needed to protect the lens. I only have filters with the Zeiss "T" coating constructed of German Schott glass on the cameras I use frequently, because I consider them the best multicoated filters that I can afford but, I cannot spend that kind of money for a camera I use infrequently.
Any camera that is threaded to accept a filter deserves the protection that comes with a mounted filter in front of the actual camera lens. I would rather risk damage to the AR coating on a filter that can be easily replaced than risk damaging the actual lens on any of my cameras from cleaning, and exposure to airborne dust or chemicals.
This brand of filter came carefully packed and the filter holder included with the filter is well designed and provides excellent protection for the filter when it is not on the camera lens because I am using a different type of filter. This filter has multiple AR coatings on both sides of the filter and after comparing the results of identical pictures with the same camera using this filter and one of my prized and now unaffordable Zeiss "T" filters I can say that I can see no difference in the results. I am sure an optical lab could document some differences, but in the real world, I can see no differences when comparing the test pictures I captured through this filter and the Zeiss filters I have used.
This design works so well, I will slowly replace the older non Zeiss filters I have on my older lenses and cameras with these newer designs.

I’ve always used B+W filters but decided to give this one a try because of the price and was pleasantly surprised by the quality of this filter. The optical quality and fit and finish of the filter is on par with the more expensive filters from Germany.

Fit as described - easy to install - packaged very well with storage case. Fast delivery.

Good quality!

I’ve always used B+W filters but decided to give this one a try because of the price and was pleasantly surprised by the quality of this filter. The optical quality and fit and finish of the filter is on par with the more expensive filters from Germany.

this is awesome filter. picture quality remains perfect with the filter and great for protection you lens.
highly recommended

Have 4 of these in 77mm, a 67mm & a 86mm. For the price, they're good, no noticible image quality issues, easy to wipe water off of. They do scratch fairly easy so depending on your usage you may need to replace yearly, and when used without a lens hood in sunlight or directly into sunlight you get blue ghosting (could be worse, but I remove it when shooting towards sun).
But quality vs cost, these are definitely the best option.

Nice quality, safe packing, decent iq.

Great filter with nice features at a decent price. Got it for around 23$. About 3mm thick. Screws on fine. Hard case. 1 year warranty if you register your product on the website

Nice quality, safe packing, decent iq.