These filters reduce the amount of light passing through the camera lens without changing the color of the scene. They are especially useful in bright light conditions to help prevent overexposure. Neutral Density filters also allow proper exposure at a wider lens opening for reduced depth-of-field to highlight a key subject by making the foreground and/or background out of focus.
Reviewed by 2 customers
use for sea and beach pictures
I had to do a fair amount of searching before figuring out how people took those nice, smooth waterfall pictures. The neutral density filters are the answer -- like sunglasses for your camera, so it lets you take longer exposures. This one is 0.9; each 0.1 is a third-stop (one notch for aperture or exposure), so they're usually sold in 0.3 increments (0.3 = one full-stop). It works beautifully! It "only" slowed my pictures down to 0.5-1.5sec exposure for bright daylight, but even that was enough to get some nice, smooth pictures of waterfalls. should work really well for streams and other flowing water, too.