Description
Have you experienced the shutter being released earlier than you expected when shooting under too-bright sunlight, when shooting a highly reflective water surface, etc.? The light volume can be reduced by using an ND filter, and you can intentionally control shutter speed and iris value.
– Greater ND numbers of 8, 16, 32, and 64 results in slower shutter speeds.
– Changing the ND number from 8 to 16 or 32 or 64 controls the amount of light.
If the iris of the lens is stopped down drastically, the entire image will become unsharpened (blur small aperture, diffraction phenomenon). ND filter, which can control light volume coming into the lens, can prevent the blurring caused by such an over stopping down, as well as deterioration in image quality caused by overexposure.
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