Great filter! There are no vignettes anywhere. The magnet is strong and holds perfectly on my 67mm SmallRig adapter for the iPhone 13 Pro.
I think that some people have left the magnet adapter (which is included) on and are then surprised that the filter doesn't hold properly xD

I have no complaints about these filters. I run them on all of my portable lenses that are carried. Flare resistance is very good thanks to the coatings, and it's rare that I have to make an adjustment in a shot due to flare. The only exception was when I was taking photos in a museum, pointing out objects near bright lights. But other than that, they clean up well and allow me to walk around without a lens cap for those spontaneous shots.

I bought this for a camera that is rarely used. It is still a valuable collector's piece that I want to keep in great condition and that means I had to protect the lens. I only have filters with the German Schott glass Zeiss "T" coating on cameras that I use a lot because I think they are the best multi-coated filters I can afford, but I can't spend the money on them on a camera that I rarely use. Any camera that is threaded to accept a filter deserves the protection that comes with a filter mounted in front of the actual camera lens. I'd rather risk damaging the AR coating on an easily replaceable filter than risk damaging the actual lens on any of my cameras through cleaning and exposure to dust or chemicals in the air. This brand of filter came neatly packaged and the filter holder that comes 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 images taken with the same camera with this filter and one of my prized and now unaffordable Zeiss "T" filters I can say that I see no difference in the results. I'm sure an optical lab could document some differences but in the real world I can't tell any difference when I compare test images I took with this filter and the Zeiss filters I used. This design works so well that I am slowly replacing the older non-Zeiss filters I have on my older lenses and cameras with these newer designs.

Excelente filtro de protección frontal para lentes. Entrega precisa y oportuna de Amazon: pedido el domingo por la noche, a la mañana siguiente a las 10 a.m. Ya pude montarlo en mi nueva lente (Fuji XF 56 1.2). para cerrar perfectamente ser muy fino - el borde moleteado permite un montaje y desmontaje rápido y preciso - no parece haber ninguna desviación de color significativa en las fotos de prueba - compré la versión de 62 mm. Este filtro lo mantendré prácticamente montado en el objetivo de por vida para protegerlo de golpes y golpes de frente

Muy satisfecho con los resultados de las fotos

The best choice - with a set of extension rings.

I just got a new lens, needed a 77mm filter to protect it. I'm not going to sit there and tell you this glass is better than any other glass. I just got it and I'm not an optics expert. But I can tell you that the packaging was beautiful, the filter housing, one of the best I've seen. It's circular in shape and holds various sized filters with slots in an internal holder. Much better than the big square thick filter boxes I have from other brands. But, the killer was the filter being so thin, and having 2 areas that are nubby so you can grip it, while the rest is smooth, a really nice feature. It looks right at home on my Canon RF24-105/4 L IS USM. I didn't notice any difference in focusing speed or aberration, but again, I'm not a lab. I'm pretty happy with this brand. I wasn't expecting that.

Though I received the order after 12 days of ordering in India, I personally feel it was worth the wait. Still have to test in real world scenarios, but the build quality is pretty good and solid and getting delivery free was icing on the cake.

It works fine and I like it!

82mm used on Nikon 24-70 F2.8, now have the 77mm for 70-200 F2.8, may try a 52mm to see if it will fit a 300mm F2.8 drop in, allowed me to shoot the Lancaster on a bright day at F6.3 (sweet spot) iso64 at 1/6th second to obtain perfect full discsCracking filter fully recommend