High-quality filter gray Venus Optics Laowa ND1000 with a diameter of 49 mm. It is an ideal accessory lens Laowa C & amp, D-Dreamer 9 mm f / 2.8 Zero-D and other lenses equipped with a thread of 49 mm filter.
gray filters are commonly used in photography and filming. Their task is to extend the exhibition by cutting off part of the light enters the camera or camcorder. The use of gray filter allows motion blur by increasing the shutter speed images and the use of large apertures, even on a sunny day.
ND filter strength ND1000 reduces the amount of light by 10 EV, extending the exposure time a 1024-fold. The filter of this magnitude allows for extremely long (even several hours) exposure times.