Hoya Neutral Density Filter

A 3-stop reduction means you are cutting the amount of light hitting your sensor by a factor of eight. This allows you to use a shutter speed eight times longer than you normally would, which is perfect for smoothing out moving water or clouds, or opening up your aperture in bright sun to get a shallower depth of field.

This specific filter has a 77mm diameter. You need to check the front of your lens or the inside of your lens cap for the diameter symbol (a circle with a slash through it) followed by a number to ensure it matches.

Yes, the multi-coating is essential for reducing internal reflections and lens flare, which can otherwise wash out your contrast or create ghosting artifacts. It helps maintain the clarity and sharpness of your original lens glass.

You can, but be aware that stacking two filters can sometimes cause vignetting, especially if you are using a wide-angle lens. If you plan to stack, it is best to test for dark corners in your frame before shooting.

Absolutely. It is a great tool for videographers who need to maintain a specific shutter speed to achieve natural-looking motion blur while shooting in bright daylight, where they might otherwise be forced to use an aperture that is too narrow.