In the past I've taken nature shots in bright sunlight mostly with fairly cheap filters. This often spoiled the fun of taking nature photos in these situations, as the photos often had a color cast, blurring, etc. Accordingly, I was undecided whether I should try the filter from K&F Concept at all, but then I gave it a chance and that was good! As soon as you unpack it, you realize that you are holding an absolute high-end product in your hands. The protective case made of real leather, the brass-metal frame, the filter itself make an extremely (!) high-quality impression. Thanks to the brass frame, the filter can also be screwed onto the lenses extremely easily. The filter reduces light by 10 f-stops, so it's specifically designed for wildlife photographers who want to shoot landscapes in bright light without blown out or "flooded" areas. This also works great, without color casts, color fringes or other impairments. You don't "see" the picture that a filter was used and that's the main thing. I've never been lucky with cheaper filters in the past. The filter is super easy to screw on and off and doesn't affect the autofocus on my Canon R5 either. At least not when there is enough light, of course. I'm really excited and can say that with this filter, K&F Concept have completely eliminated my aversion to filters of any kind. Therefore 5 stars