Review on 📷 K&F Concept 43mm Slim Fader Variable ND2-ND400 Neutral Density Adjustable ND Lens Filter Kit + Microfiber Cleaning Cloth for DSLR Cameras by Michael Hudson

Very nice! Excellent build quality. I bought it for a LX100 camera. It's extremely light, so it shouldn't overload the motor of the Panasonic LX100 retractable zoom lens when mounted. If you shoot wide open videos all day and want to keep your shutter at 1/50 due to the 180 degree rule, then this is the ticket. (Fast shutter speeds create a strobe effect that can be undesirable.) Tip: Gently tighten the block onto the lens. If they are not tightened, you can accidentally rotate the entire block. The size of the external filter (facing the subject) is larger than 43 mm. I need to figure out which dust cap fits if I want to keep it on while filming.