Camera Lens Gray Neutral Density Fader Filter CAMDIOX 72mm variable ND (72 mm)

CAMDIOX 72mm variable ND (neutral density) fader filter is a screw-on optical accessory designed to provide adjustable light reduction for camera lenses with a 72mm thread. The filter enables gradual attenuation of incoming light, allowing photographers to use wider apertures or slower shutter speeds in bright environments without overexposure. Built for general-purpose photographic use, it supports creative techniques such as long exposures, motion blur, and depth-of-field control while maintaining color balance and image quality.

Advantages

The variable ND design replaces multiple fixed-density filters by offering continuous adjustment between light reduction levels, which simplifies field work and reduces kit weight. Precision screw threads ensure secure mounting on compatible 72mm lenses, and the optical glass surfaces are formulated to minimize reflections and preserve contrast. Using a single rotatable element provides smooth transitions in exposure control and fast adaptability to changing light conditions.

Suitable for

• Landscape photography requiring long exposures to smooth water and clouds
• Urban and architectural shots where motion blur of people or traffic is desired
• Portraits that need wider apertures in bright light to achieve shallow depth of field
• Video shooting that requires stable exposure control or slower shutter speeds

Key specifications

• Thread diameter: 72 mm compatible with 72mm lens threads
• Variable neutral density: continuous attenuation across a range of stops
• Filter type: screw-on variable ND (fader) with rotatable adjustment
• Optical material: multi-coated glass to reduce reflections and flare
• Mount construction: metal or metal-alloy filter ring with knurled edge for rotation

How to use

Attach the filter by screwing it onto the front thread of a lens that accepts 72mm filters until it seats snugly but not overtightened. Compose and meter the scene without the filter or with minimal density, then rotate the front element to increase the density until the desired exposure or creative effect is achieved. For long exposures, use a tripod and mirror lock-up or electronic front-curtain shutter as appropriate to your camera. Check for vignetting at wide focal lengths and adjust framing or use a slim-mount filter if needed.

Usage recommendations

To maintain image quality, clean the filter surfaces with a soft microfiber cloth and a lens-safe cleaning solution. Avoid cross-threading when mounting and store the filter in a protective case when not in use. When shooting wide-angle with heavy attenuation, verify that no unwanted dark corners appear and stop down or switch to a single fixed ND if cross-polarization or X-pattern artifacts occur at extreme settings.