The protector came with no issued.

great filter that doesn't negatively impact the photographs. Even in backlighting, it doesn't create any additional flare. The same applies to vignetting at the lower end of the focal length range (14mm in my case). I use the filter on a Canon RF 14-35mm lens.

Review rate this high for mid level glass filters. I have never had problems with them

Quick replacement for broken lens filters. Thank you

The price is also higher than a classique. This is part of the anti-casse system, which is finally a good choice when the prize of the object is installed. Investissement de protection utile.

am a K&F Concept fan as they produce some good stuff at affordable prices. I like to have a bit of 'extra' glass at the end of my lenses, and one of them was in need of the addition. This one was easy to screw on to the lens, even at 82 mm, I have tried some other filters that have been extremely hard to screw on even on lenses with smaller diameters.

The K&F Concept Nano X-Series Armor UV Filter 67mm impresses across the board with its first-class workmanship and innovative protective features. The explosion-proof design is a particular plus. The double-layer construction ensures that, in the event of a breakage, the debris is held in place by the adhesive layer, significantly reducing the risk of damage to the camera or lens. Practical use quickly demonstrates that this UV filter not only protects against mechanical influences but also enhances the overall appearance. With a light transmittance of 98.9%, the filter does not impair image quality in any way—quite the opposite: its high transparency and precise craftsmanship ensure razor-sharp, clear shots. Even with 4K or 8K videos, the brilliance of the images is fully preserved. Another highlight is the 28-layer nano-coating. This protects the glass not only from scratches and dust, but also from water, grease, and dirt. This is particularly practical for outdoor use, as the filter is easy to clean while the lens remains protected at all times. The anti-reflective coating also minimizes lens reflections and glare, which is particularly beneficial when shooting in sunlight. In terms of handling, the CNC-milled aluminum frame allows for effortless installation and removal. The fine trapezoidal pattern provides a pleasant feel and makes it easier to screw the filter on and off, even in adverse conditions such as cold or wet weather. The filter is not only an indispensable accessory for protecting your expensive lens from external influences, but it also impresses with its sturdy construction and high level of everyday suitability. Especially for photographers who are frequently outdoors, it offers a reassuring sense of security without compromising image quality. With this filter, you are well equipped to keep your lenses in top condition for the long term. Overall, the K&F Concept Nano X-Series Armor UV Filter 67mm offers an ideal combination of protection, image quality and ease of use, making it an excellent choice for professionals and ambitious amateur photographers.

I order K&F because I trust the quality and quality I sweat you want when looking for something to protect the glass of a very expensive lens. This hasn't been disappointed, well made with no detrimental impact on image quality when mounted.