New Version is better:
We listen to customers and made the necessary changes, we value all suggestions such as yours.
The vignette around the edges are gone and the image quality is more great by using New Version filter.

ND8 filter – This filter is helpful for reducing light from entering the lens by 3 f-stops, which is best for photography in partial cloudy daytime condistions. This filter also helps to reduce the lens flare from the sun effectively to give crystal-clear images.

ND16 filter – This filter is used to cut light entering the lens by 4 f-stops, which makes it best-suited for filming in normal sunny conditions. This filter is helpful to get natural-looking blur in the footage while filming outdoors.

ND32 filter – This filter is helpful in reducing the amount of light from falling on the sensor by 5 f-stops, making it an ideal choice of filter for filming in bright sunny conditions. Apart from this the filter effectively prevents lens flare from spoiling the picture while filming against the sun. This helps to tone down the highlights of the sky and get a sharp image of the landscape.

Lens Filter: ND8 / ND16 / ND32
Frame Material: Aviation Aluminum Alloy
Lens Material: Optical Glass; Multi-layer Coating
Frame: Ultra-thin Frame

Package Included:
1x ND8 Filter
1x ND16 Filter
1x ND32 Filter

How to use:
You have to remove the lens on the camera and put the filter lens on it instead.
Remove lens with counterclockwise twist 45-degrees, then reverse procedure to put on filter lens.