This Hoya density filter is equipped with two polarising layers to control the amount of light entering to the camera objetkiv. At the minimum setting, the filter allows 1/3 of the light to pass through to the lens. This is equivalent to 1.5 stops on the aperture or shutter speed. At the maximum setting, the filter only allows 1/400th of the light to pass through to the lens. This is equivalent to 9 stops on the aperture or shutter speed. After the filter is attached to the lens, you can rotate it between "Min" and "Max", thus controlling the amount of light entry.

With this variable density filter from Hoya you have the possibility with fast lenses such as a 50 mm f/1.4 lens, fully open and in full sun, with low depth of field. However, you can also slow down the shutter speed so that the clasp can stand open for a few seconds in the blazing sun. This is enough to make artificial blurry shots of movements of water, cars, people and almost anything else that moves. The possibilities are endless!

Key Functions:

A larger aperture in brighter light allows a low depth of field and a beautiful, blurred background. Will not affect the colour or detail of the image. Eliminates overexposed and washed images. Variable range: 3-400
Hoya 52 mm Variable Density Screw in Filter