Benro 100x150mm Master Hardened Glass Reverse Graduated 0.9 ND Filter, 3 Stop

During shooting, the sun light is very strong which causes very big light ratio compared with the surroundings. GND reverse filter is used to weaken the sun exposure, so that it can meet the requirement of light ratio, balance the image details.

Hardened Glass Filter
The same Schott B270 optical glass-just twice as strong, Benro's MasterH hardened glass graduated and solid neutral density drop-in filters are made with the finest quality optical glass, specially strengthened for substantially improved durability and protection against scratching and breakage vs. regular glass filters.

There is no bread under 8HD impact
Benro MasterH hardened glass filters can withstand twice the peak pressure of conventional glass filters. Plus they incorporate all of Benro's advanced technologies. HD optical technology for crisp, sharp images. Precise grinding and polishing ensure that the glass surfaces are parallel and the light entering the lens passes through the filter to the sensor in a straight line, producing maximum image quality.

HD Optical Technology
The B270 optical glass raw material is processed with precise grinding and polishing. The inner structure is stable and stands in ranks. The long focal length will not affect the image sharpness.

Anti Infrared Coating, Low Color Shift
IR and UV reduction coatings help maintain faithful color rendition by eliminating errant blue or warm tone color shifts caused by unwanted infrared and UV light. Ultra-low chromatic aberration coatings dramatically curtail the unnatural colors that can often occur in high contract transitions between highlights and shadows, such as when a subject is set against a bright sky.

Water & Dirt Proof
The double sided water and oil coating makes to be a protective layer like lotus leaf which will maintain the wateand oil at the surface.