I bought this for a Canon RF 600mm f/11 lens. I personally don't think that a UV filter provides much in terms of eliminating any impact of cutting back UV light hitting your sensor, but on expensive lens I will almost always use a UV for protection (along with a lens hood). This filter is part of K&F's Nano-X series of magnetic filters, and you can add other Nano-X filters to the UV filter here that screws in. The included lens cap also attaches magnetically. The magnet is VERY strong. I will consider other Nano-X filters, and adapt them via a step up ring to my other Canon lenses which are mostly 77mm. Recommended.
03/03/2024