Fotga HD Optical Glass ND8 4x4 Neutral Density Filter 3 Stops - Matte

In this review the Fotga HD Optical Glass ND8 4x4 filter is assessed as a straightforward tool for cinematographers and photographers who need reliable light reduction without changing color. The bottom line: this is a simple, well-made neutral density filter that gives exactly 3 stops of light reduction in a standard 4x4 in (100 mm x 100 mm) format, making it useful for matte box and holder workflows where controlling exposure or creating motion blur is required. It is best considered when steady color fidelity and easy slot-in compatibility matter more than exotic coatings or variable ND mechanics.

Key Features

• High quality optical glass: Delivers consistent light transmission and keeps color rendition neutral so photos and footage do not shift hue.
• ND8 / 3 stops: Reduces light by three stops, allowing wider apertures or slower shutter speeds for shallower depth of field and controlled motion blur.
• Multi-layer coating: Coatings on both sides reduce reflections and help minimize ghost images when used on lenses and matte boxes.
• Matte box compatible size: The 4x4 in (100 mm x 100 mm) sizing fits common filter trays and holders like Cokin Z, Hitech, and Lee systems.
• Thin 2 mm profile: A slim thickness that slides into filter trays easily and keeps stack height low when multiple filters are used.

Who It's For

The Fotga ND8 suits independent filmmakers, DSLR and mirrorless shooters, and photo enthusiasts who use a 4x4 in matte box or filter holder and need a dependable, color-neutral way to cut three stops of light. It is particularly useful on location when ambient light must be tamed for consistent exposure or to enable creative shutter and aperture choices.

Shooters who rely on variable ND systems or who need ultra-robust weather sealing or edge-mounted threads for adapters may want to compare other product lines. Also, those needing a wide range of densities will need additional ND filters rather than this single-strength glass.

Pros & Cons

Pros

• High quality environmental optical glass preserves image clarity and color fidelity.
• Multi-layer coating reduces reflections and helps avoid ghosting when paired with lenses and matte boxes.
• Standard 4x4 in size fits common holders like Cokin Z, Hitech and Lee for flexible use.
• Exact 3-stop reduction is predictable for exposure control in both photo and video.

Cons

• Single-density ND8 offers only one light reduction level, so additional filters are needed for other exposures.
• The 2 mm glass, while slim, may require careful handling to avoid scratches compared with thicker, more protected filters.

Specifications

Filter type	Neutral Density (ND8 / 0.9)
Light reduction	3 stops
Material	Environmental optical glass
Coating	Multi-layer coating on both sides
Size	4x4 in (100 mm x 100 mm)
Thickness	2 mm
Compatibility	Cokin Z, Hitech, Lee holders and 4x4 in matte boxes

Our Verdict

The Fotga HD ND8 4x4 filter is a practical, value-oriented choice for users who need an honest 3-stop reduction and neutral color behavior inside a matte box workflow. It is good value for shooters who already use slot-style holders and want reliable, coated optical glass that reduces reflections without altering hues.

Frequently Asked Questions

Will this fit my matte box?
Yes, the filter is a standard 4x4 in (100 mm x 100 mm) size and is designed for common filter trays and holders such as Cokin Z, Hitech and Lee.

Does the ND8 change color balance?
No, as a neutral density filter it reduces light intensity equally across wavelengths so it does not change hue and preserves color fidelity.

Can I stack this with other filters?
Yes, the 2 mm thin profile is intended to slide into trays and be stacked, though users should watch for vignetting on wide lenses if multiple filters are stacked.