Benro 100x100mm Master Hardened Glass 1.8 ND Filter 6 Stop camera accessory

What the filter does

The Benro Master Hardened Glass 1.8 ND Filter cuts six stops of light, letting you use wide apertures or long shutter speeds in bright conditions. It is built for landscape and long-exposure photographers who need precise density control without colour shift. The 100x100mm square format fits standard filter holders used on many wide-angle and telephoto lenses. It is not for shooters who require variable density or circular screw-in sizes.

Critical specification

The filter provides a fixed 1.8 optical density, equal to a six-stop reduction, which determines exactly how much exposure time you gain. That single number decides whether the filter matches the creative effect you want; no other specification changes the result. Buyers who need a different stop value must choose another density.

Behaviour under sustained use

Schott B270 glass hardened to twice the strength of regular filter glass resists scratches and breakage during repeated field handling. Precise grinding and polishing keep light travelling straight through to the sensor, preserving sharpness even during extended exposures at long focal lengths. The coating maintains consistent transmission without degradation over time.