| The Hoya Variable Density filter uses two polarizing layers to control the amount of light that passes through the filter and into the camera lens. |
| At it's minimum effect the filter passes 1/3 of the light in a scene. |
| That is equal to 1.5 stops on the aperture or shutter speed. |
| At it maximum effect the filter passes just 1/400 of the light in a scene. |
| That is equal to 9 stops on the aperture or shutter speed. |
| After the filter is mounted on the lens, turning the filter ring between Min and Max can greatly control the amount of light entering the lens. |
| With the Hoya Variable Density filter it is possible to shoot with fast lenses like a 50mm f/1.4 lens wide open at f/1.4 in full sun for a very shallow depth of field. |
| to slow down the shutter speed to where the shutter can be open for several seconds in full sunlight. |
| This is enough to create artistic blurring shots of motion on water, cars, people or almost anything that moves. |
| The creative possibilities are endless. |
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The Hoya Variable Density filter uses high quality optical glass from Hoya Corporation, the worlds largest optical glass manufacturer
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