K&F CONCEPT 52mm ND2-32 + ND32-512 Filter Kit Variable ND Lens Filters Set (2 Pcs) Neutral Density (Nano-X Series)

• Light Reduction Function: The adjustable ND2-32 and ND32-512 filters slow down the shutter speed by 1-5 and 5-9 stops respectively for extending the exposure time. Perfect for video shooting.
• No X effect: Our variable ND filters have min-max locking mechanisms and apertures marked on the rotating ring for precise adjustments.This filter can only be rotated about halfway in the min-max range without an X pattern occurring - this limitation is due to physics.(The X phenomenon cannot be avoided with ultra-wide angle lenses in the 20mm range.)
• Optical glass: Made from high quality optical glass that effectively reduces reflections and glare from the filter itself, with no colour cast in the image.
• 28 Multi-Layer Coatings: with 28-layer nano-coating on both filter sides, waterproof, oil-proof, dust-proof, HD resolution, absolutely meet the requirements of adventure photography.
• No vignetting: The frame is made of aircraft aluminium with an ultra-wide-angle structural design and the thickness is only 7.6mm, which is convenient for you to avoid vignetting at the wide-angle end of the 16mm end. lens hood will not be able to use on this filter.

K&F Concept Variable ND Filter Set- D2- ND32 & ND32-ND512 2. Using AGC optical glass, 3. Filters with nano meter coating.