The K&F Concept CPL filter for cell phone cameras has convinced me overall.

The filter offers solid workmanship and ensures significantly better photos, especially in difficult lighting conditions and reflections.

The clamp mount is easy to use and holds securely on the phone. I find the magnetic mount of the lens particularly practical, which makes attaching and removing it very convenient.

A small disadvantage is that the filter is sometimes a little difficult to align, and with thicker cell phone cases the clamp mount can be a little wobbly.

Despite this, I am very satisfied with the image quality and handling. A good product that I can recommend to all smartphone photographers!

This filter, if nothing else, helps keep my marriage on an even keel.Now I won't rehash the old UV vs non-UV filter debate, but personally I don't really feel I need a UV filter on my DSLR lenses, and if I were the only person using my cameras I wouldn't bother at all as I'm extremely careful with all of my equipment. My wife, on the other hand...Every time my wife takes out one of my cameras she treats it the same way she treats her sunglasses (lenses down on the dashboard of her car, jamming them in her pockets without a case or a second thought, smudges... just... everywhere. Oh, the humanity). When it comes to optical equipment she's history's greatest monster, a true menace to glass, but complaining about this to her will only ever end in a resentful argument.So the solution? A high quality UV filter that will protect my lenses without reducing image quality. I've tried cheap filters in the past that I've ended up removing every time I take a shot because there's noticeable degradation in the results, but as this is a high quality filter I can't see any different in the final product with or without the filter. All I see is a clean, scratch- and fingerprint-free lens coming back to me safe and sound, and that's worth its weight in gold.

Since it is an EOS mount, different lenses can be used based on it.

It has no ports but I can still use Canon lenses on NX cameras... Can enjoy different angles.

It allows me to mount m42 mount lenses on my Nikon 1 camera...there is no auto focus with it but it is very easy to get sharp photos...there is no glass in it so the optical quality of the lens used is not affected...this unit easily connects to my nikon one and my m42 lenses...the helios44_3 and the volna9...easy to screw on and off the adapter...the package is a week early arrived than expected and the price was amazing...this was one of the best values I've bought in a long time

Can easily adapt old FD lenses to the RF mount. Fits!

I have 2 cameras and several lenses, power supplies and 2 tripods, I also have a computerised mount for astrophotography. It All fit! As we know it is the horizon that can make or break a "star show" this will allow me to travel off the beaten trail for those "places" of wonder.As far as cons... well if you need speed to get your camera out the front pack can accommodate this. it is a bit bulky for action shots however if you landscape its good for one of the smaller wide angle lenses, diameter is limiting however, and fits my Nikon with a mounted lens quite nicely.

This is a great mount for lenses that have a built-in manual aperture adjustment, not the best for AF lenses.