K&F concept is a market leading brand and this UV filter is a testament to their capabilities to provide quality glass that have no detrimental effects to my expensive Nikon 24-70 2.8 Portrait lens.

I have a large collection of Nikon Lenses and I always protect them with UV filter. UV filters have minimum effects on photography so not really needed with modern DSLR or Mirrorless cameras. The only reason I buy one for each of my lens and replace them when they are looking tired or have signs of wear and tear.

I have learnt from my own experience that if you want to prolong the life of your expensive lens or same it from damage then nothing comes cheaper than a UV filter. Your lens has expensive multi coatings and if you are cleaning your lens regularly as finger prints, rain water and sand etc will ruin the coating over the time. I rather replace under £20 UV filter than over £1k lens.

UV filter is also protection from accidentally knocking the front element or in worse scenario if lens slipped out of your hand. I have seen many photographers sharing photos showing how UV filter protected the front elements.