ND Filters- Camera Lens Neutral Density Filters

Neutral density filters, or ND filters, are versatile tools that let you reduce the ambient light that reaches your camera’s sensor. Using a neutral density filter allows you to slow your shutter or open your aperture wider on a bright day while still maintaining correct exposure. The strength of these filters is generally measured in stops of light, so you’ll know the effect’s level of intensity.

What are the different types of neutral density filters?

There are several varieties of neutral density filters from top brands like Tiffen, Lee, Moment, and B + W. When shopping, it’s important to know which type best suits your photographic needs.

Graduated Neutral Density Filters

A graduated neutral density filter is bisected and features clear, unfiltered glass on one side and a neutral density filter on the other. This lets you even out the exposure in a scene. For instance, the sky at sunset is often well exposed while the foreground is underexposed. By placing the neutral density portion of the filter over the sky, you can even out the scene for good exposure throughout your shot.

Variable Filters

A variable neutral density filter features a range of intensity. Twist the filter’s front element one way and you have a weaker effect. Twist it the other and the effect is stronger. This is the most versatile type of neutral density filter.

Size

To decide what size filter you need for your lens, look for this symbol: ? (ex. 72?). This is the filter size, in millimeters, that your lens requires. Check the bottom of the lens barrel or the front element of the lens to find the symbol.

FAQs

How do neutral density filters work?

Neutral density filters use light-reducing coatings to block all wavelengths of light evenly without interfering with the clarity of the image. Using a neutral density filter is a great way to reduce the light that reaches your sensor without sacrificing your preferred aperture or shutter speed.

ND filters come in many different densities so you can adjust the available light to your preferences. 

Some ND filters feature graduated densities that help balance the available light from the sky with the dimmer lighting on the landscape. Variable ND filters rotate to increase or decrease the density for better adaptability. Some ND filters also offer polarization. 

What neutral density filter size should I get?

If you plan to use your neutral density filter with a specific lens, look for the lens filter size on the front element or the bottom of the lens. If you want a more versatile filter option, you can select a large diameter ND filter and use step-up rings to adapt the filter to each of your lenses.

Purchasing a kit with multiple filters in different densities at the same diameter is a great way to get started using ND filters. This will ensure you’ll always have the perfect filter for every situation.