Variable Neutral Density Filter

What is a Variable ND filter?

Variable ND filter offers a wide range light reduction. For example, the ND2-400 filter offers light reduction 1-8.7 stops, the ND2-32 offers light reduction 1-5 stops. You can adjust the light reduction by rotate the front ring of the variable nd filter, very convenient for photography and especially for videography.

GiAi offers 5 kinds of Variable ND filter:

1.Variable ND2-400 filter, whose light reduction is 1-8.7 stops,

2.Variable ND2-32 filter, whose light reduction is 1-5 stops, and it is no X-pattern.

3.Variable ND8-128 filter, whose light reduction is 3-7 stops, and it is no X-pattern too.

4.Variable ND8-2000 filter, whose light reduction is 3-11 stops,

5.Variable ND64-1000 filter, whose light reduction is 6-10 stops,

For Long Exposure

Without changing the aperture, the Variable NDX filter allows the freedom to change the shutter speed according to the effect desired. For example, without adjusting the aperture, the same 1/60 scene can be taken using the Variable NDX filter with shutter speeds from 1/20 to 6 seconds, with just a turn of the outer filter ring.

The problem of diffraction is eliminated by being able to work with a slow shutter speed.

For Wider Apertures

With the Variable NDX filter, the shutter speed remains constant for a wide aperture easily creating a blurred background effect.

Prevent Overexposure / Highlight Clipping

Even with a shutter speed of 1/8000 seconds, a large aperture of f/1.4 or f/1.2 can cause overexposure / highlight clipping. With the Variable NDX filter, this overexposure is eliminated.

For HDSLR Movies

For HD video-enabled cameras, use the Variable NDX filter to easily adjust light control and shutter speed. The Variable NDX filter makes it simple to produce blurred background effects, simulate a night scene or create manual fade in / fade out effects. It is also perfect for use in bright locations such as beach or snow scenes and city scapes.

Easy To Operate / Easy Framing / Easy Focus

With a tripod mounted camera, use the brightest setting for framing and focus and then increase the density to your desired level by simply turning the outer filter ring.

Avoid Vignetting 

The singular versatility of the Variable ND filter not only replaces a whole set of stacking neutral density filters it also removes vignetting which may be caused by using multiple filters.