This is a K&F Concept variable neutral density filter designed for camera lenses with thread sizes from 37mm up to 82mm. It provides adjustable light reduction levels for photographic control.

• Brand: K&F Concept

• Type: Variable Neutral Density Filter (ND2-400 B Series)

• Available thread sizes: 37mm, 49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm, 82mm

• Adjustable density: ND2 up to ND400 (approximately 9 stops)

• Note: Maximum density (ND400) or high density settings may cause visible X spots or blurring in images

• Recommendation: Reduce density or aperture gradually to minimize image artifacts