![]() ![]() In the daylight you won’t be able to get an exposure long enough to flatten the waves. You might also use an ND filter if you were shooting the sea, for instance, and wanted a long exposure to smooth out the water for that classic milky sea effect. An ND filter helps reduce the light coming into your lens, allowing you to shoot at f/2.8, for example, at a reasonable shutter speed. Without an ND filter in this situation you will probably blow out your exposure. It’s best to use an ND filter or variable ND filter when you are shooting in strong daylight or other bright conditions and want to shoot with a wide aperture, for instance, to create a shallow depth of field effect. Typically you twist a ring on the outside of the filter, and the filter shifts between low and high densities (often anywhere from 2 up to 10 stops of light). What is a variable ND filter?Ī variable ND filter is a neutral density filter that allows you to just the density of the filter. This is when you might want to consider buying a variable ND filter. We’ve explained what neutral densities filters are and how to use them, but sometimes you want a more compact, all-in-one solution that lets you explore the effects of an ND filter at a range of different densities. Neutral density filters are one tool you can use to control exposure in their ability to reduce the amount of light that enters the lens. Taking control of exposure for creative effects is one the pure joys of photography. ![]()
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