The title of this review pretty much says it all about the K&F Concept 52mm MCUV lens protection filter; even the name of the product indicates its most important function. This type of filter is primarily used to protect our expensive camera lenses, and K&F directly names its product as a “lens protection filter.” Therefore, this product appears to be well made and, when used, did not cause any aberrations, glare or ghosting in images taken with the filter, whether directly on the lens or in combination with other filters. It is very thin and has both an internal and external thread of 52mm. In comparison, the K&F UV filter is much thinner than the same type of filter sold by other manufacturers, with no noticeable difference in photo results. My only complaint is that, like many other K&F filters I've tried, attaching the K&F filter can be a bit tricky and produces a more noticeable "scratching" sound than other filters when screwed onto the mount . However, I did not find any negative results that could be attributed to this sound or its creation. All in all, I think the K&F Concept 52mm MCUV Lens Protection Filter is a product that should definitely be on your potential purchase list if you are looking for a UV protection filter. The competitive price and thin form factor, as well as the lack of obvious drawbacks, are clear pluses, which is why I rate this lens a solid 5-star product.