This MC UV Lens Filter has been a great addition to my gear. I already had a CPL filter from K&F and it is around the same size. The build quality is good. It's super slim, feels sturdy and reliable, and no vignetting from what I saw.

The coatings on this filter reduce reflections and ghosting. I tried sunny and cloudy conditions and the filter worked great with both. It also works as a protector for my main lens. As a physical barrier against dust, dirt, scratches, and accidental bumps, it gives peace of mind.

Finally, it does include a lens cap and cleaning cloth which are nice. The cap fits securely and the cleaning cloth is just your standard microfiber. I would say this filter is a great value for the price you pay.

The 'K&F Concept 67mm UV Filter Ultra Slim Japan Optics Multi Coated Ultraviolet Protection Lens Filter with Lens Cap' arrived in a branded box.

The lens is in a plastic case for protection, it also serves to protect one side of the filter, whilst the opposite side is protected by the lens cap.

The filter was an easy fit to my Nikon P900 and as it is slightly wider than some filters I found it easy to unscrew after use. I would however recommend carrying a suitable filter wrench just in case.

It would be nice to see a cover for the side of the filter not protected by the lens cap a the lens filter with cap attached are stored in a cellophane envelope in the case, I suggest putting the filter/cap combination into the envelope with the lens cap the same side as the flap which keeps the adhesive as far away from the lens as possible.

It would be nice to see a protective cover for the second side of the filter, maybe something push on.

This worked perfectly - and fitted easily onto the front of my Nikon 18-70mm lens. The lens cap that comes with it even makes it easy to attach. I couldn't tell any difference in image quality when using the filter (other than the effect of the polarizer). Really happy with it.

The "K&F Concept 67MM Polarizing Filter Circular Polarizing CPL, Ultra Slim, Japan Optics, Multi-Coated, with Lens Cap" came in a branded box. It was nice to find the filter in a hard plastic case for protection, with a lens cap already attached to the filter. I ordered this filter for a Nikon P900. With the lens cap still attached to the filter, I carefully screwed the thin filter into place. I then took a series of pictures to check its effectiveness, and have included two pictures of the original Nikon lens cap showing the difference. When attempting to remove the filter, I found that it was stuck, so I had to resort to a filter wrench to remove it. The reason it got stuck was because I was turning the polarizing ring clockwise and counterclockwise from my perspective behind the camera. I must have just caught the threaded ring with my finger as I turned it counterclockwise, just enough to lock the filter in place. Some suggestions I have from using the filter; 1. When installing the filter, leave the lens cap on as it gives a larger shooting area. 2. Only turn the filter clockwise when viewing it from behind the camera to avoid repeating my mistake and lock the filter in place. 3. Carry a suitable filter wrench when using one of these filters just in case it gets stuck. 4. If it fits a P900 and it gets stuck. Zoom the lens so it points out about 30mm then remove the battery without turning the camera off. This will stop the lens retracting when the camera is off and if the camera is left on it will stop the lens trying to counteract the movement. 5. The lens and cap are stored in a small cellophane sleeve inside the plastic case. It is best to leave the lens cap on and insert it so that the flap of the cover is on the same side as the lens cap. This virtually eliminates the risk of the sticky flap touching the exposed filter surface. The only thing that would make this filter better is some sort of cover for the exposed surface or attachment points to hold the filter in place inside the case.

This lens filter and cap are of excellent quality.

Great filter and lens cap. I'm thrilled

Perfect service

I have a Nikon camera; I like taking pictures... But sometimes I lose a lens cap. These 77mm caps fit my lenses perfectly. They sure cling. I've lost a few caps in the past because I took them off at the wrong time, but as a photojournalist, I'm busy walking around and getting into the right position for a good shot. I don't always keep an eye on my lens caps. These seem to have the filter well under control. The cleaning cloths are very fine and should help to keep the glasses clean. I haven't been a huge fan of lens cap lanyards in the past as they just seem to get in the way, but I might try one to see if these are any better than the ones that I used a few years ago. The price is great and the quality is there so they're a good buy for a professional or casual photographer.