neutral density filter

25.4mm 광학 유리 필터 50 Scratch Dig Absorptive Neutral Density Filter

Absorptive Neutral Density (ND) Filter Overview: Absorptive Neutral Density (ND) filters is a type of dark filters that easily attaches to the front of a camera lens, to control how much light enters the camera’s sensor. Since a neutral density filter only affects light levels, it doesn’t have any impact on image colour, contrast or sharpness. Essentially, it’s like a volume control for light. By reducing the amount of light that comes through your camera lens, a neutral

400-1100nm 광학 유리 필터 N-BK7 반사 중립 밀도 필터

Reflective Neutral Density (ND) Filter Overview: Reflective Neutral Density (ND) Filters provide uniform attenuation over the broad spectral range from 400 to 1100 nm. Reflective ND filters consist of an N-BK7 glass or UV fused silica substrate with a metal (Inconel) coating deposited on one side. Inconel is a metallic alloy that ensures flat spectral response from the UV to the near IR. To prolong the lifetime of reflective ND filters, we recommend using non-contact cleaning