Chengdu Yafei Optical Instrument Factory
Chengdu Yafei Optical Instrument Factory YOPHY stays with beauty and time.
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ND filter with continuous darkening, suitable for portrait and filming
Variable ND filter 2–32x is an alternative to lighter ND filters.
ND (neutral density - neutral grey) filter helps to redukce the light of all of the wavelengths (colors). While using ND filter, the photographer can extend the exposure time and change the size of the shutter according to his priorities, which allows him to have the length of the exposure under control even under extreme circumstances (sea, mountains, snow). Anyway, cheap ND filters don´t reduce the intensity of the light of all of the wavelengths regularly, which can cause color defects on the final picture.