Wider outer optic to help reduce vignetting at wide angles Made of high quality optical glass by K&F Concept technology Neutral density can be adjusted from ND8 to ND2000. Reduces the amount of light reaching the film without affecting the color. Suitable for dynamic screen, waterfalls, streams, waves, etc. Brand of K&F Concept manufactured by a professional team, 12 Month Manufacturer Warranty, 100% Satisfaction Guaranteed.
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