The title of this review says pretty much everything 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 mainly used to protect our expensive camera lenses, and K&F directly names its product as "Lens Protection Filter". As such, this product appears to be well made and when in use has not caused any aberrations, glare or ghosts to images captured with the filter, whether on lens or in combination with other filters. It is very thin and has both an internal and an external thread of 52 mm. In comparison, the K&F UV filter is much thinner than the same type of filter sold by other manufacturers, with no discernible difference in photo results. My only complaint is that like many other K&F filters I've tried, the K&F filter can be a little tricky to attach and makes a more noticeable "scratching" sound than other filters when screwed onto the mount . However, I could 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 possible buy list if you are looking for a UV protection filter. The competitive price and thin form factor and lack of obvious downsides are clear plus points, which is why I rate this lens as a solid 5 star product.