WSND-ES has been realized by receiving feedback from the users of former WSND (Wide Spectrum Neutral Density) maintaining the same standard of optical quality while offering a very attractive and affordable price setting.
The essential distinction is its glass structure, WSND-ES as a single glass, and WSND as a pair of sandwiched glasses.
By adopting a new cutting-edge ND coating method, WSND-ES performs the most enhanced scratch resistance on the surface of the glass in marumi history.
What makes cinematographers bother the most when using an ND filter? Many of them would answer the same way; The scratches on the surface of the glass which made the light throughout the coating hole vividly impact the image. That truly means, the precious glass becomes useless. That risk must be avoided.
By adopting an advanced new ND coating replacing the conventional vacuum deposition method, an unrivaled scratch resistance has been realized, while maintaining the optical flatness in a wide range of spectrum; The origin of the brand name, WIDE SPECTRUM NEUTRAL DENSITY. WSND-ES has passed the maximum 9H pencil hardness in the JIS standard pencil test, which is corresponding to ISO15184*.
We have pursued marumi original standardized inspection with an increased hardness to demonstrate the performance of its scratch resistance.
*ISO 15184; Paints and varnishes — Determination of film hardness by pencil test/Correspondent JIS K5600-5-4
Flat throughout a wide range spectrum- No color shift
The most essential element of ND filter in film-making, No color shift. Over a wide range from visible to near-infrared light spectrum, WSND-ES will reproduce the color faithfully by mitigating red casting which is peculiar to sensitive digital image sensors.
The graph below shows a flat and stable transmittance curve from visible light of 400-700nm to a near-infrared range of up to 850nm. As a result, cinematographers can focus more on creative filmmaking reducing the time and cost of the post-production process.
Easy maintenance under harsh environments-No time consuming
Water-/oil repellent coating strongly assists easy-maintenance performance under harsh environments. Nuisances like sweat, skin crème, lotion, or even compounded stains of grease will also be wiped off quickly and easily. To realize optical precision, Anti-reflective coating is also embedded which also performs Static-resistance.
Anti-static coating (ASC) works wonders on the surface of a glass. Dust and dirt adhered to the surface can be quickly and easily blown off.
When shooting near the waterfront or in the rain, the lens repels water droplets for stress-free by water-repellent coating.
Oil-repellent coating prevents fingerprints from sticking to the surface, and even if it does, it can be easily wiped off and is scratch-resistant.
Easy handling by edge-sealing-No mishandling
By applying sealing to the edges, the operability are enhanced for easier handling. It also prevents inner reflection caused by the edge of the glass. In addition, the glass edge is not exposed to physical contact by rounding the corners.
WSND Filter
WSND covers a wide range of spectrum from visible to infrared red purely flat. That is the origin of the product name;
- W ide - S pectrum - N eutral - D ensity
The essential distinction from the WSND-ES is its glass structure, WSND as a pair of sandwiched glasses and WSND-ES as a single glass.
"What is the most rational way to avoid scratches on the ND-coated surface of glasses?"
The answer is; "Physically do not expose the ND-coated surface of the glasses."
The ND-coated surfaces are physically confined by the fine lamination technology which perfectly avoids damage to the ND coating. The other side of exposed surfaces is separately coated; Oil-/Water repellent coating is embedded over the top of Anti-reflection coating, which also performs Static resistance.
Flat throughout a wide range spectrum- No color shift
WSND will reproduce the color faithfully by mitigating red casting which is peculiar to sensitive digital image sensors.
The graph below shows a flat and stable transmittance curve from visible light of 400-700nm to a near-infrared range of up to 850nm. As a result, cinematographers can focus more on creative filmmaking reducing the time and cost of the post-production process.
Easy maintenance under harsh environments -No time consuming
Water-/oil repellent coating strongly assists easy-maintenance performance under harsh environments. Nuisances like sweat, skin crème, lotion, or even compounded stains of grease will also be wiped off quickly and easily. To realize optical precision, Anti-reflective coating is also embedded which also performs Static-resistance. (Check the above WSND-ES coating short films)
Easy handling by edge-sealing -No mishandling
By applying sealing to the edges, the operability is enhanced for easier handling. It also prevents inner reflection caused by the edge of the glass. In addition, the glass edge is not exposed to physical contact by rounding the corners. (Check the above WSND edge-sealing image)
A large diameter polarizer for cinema and broadcasting professionals enabling attachment to filter trays such as an industrial standard, ARRI LMB Mattebox or Bright Tangerine One Tray for Misfit Kick.
Pure flatness and long-lasting durability -Made in Japan quality control
The flatness and durability of the polarizer despite its large diameter are nothing but the results of polishing and lamination technology that Marumi has accumulated over many years.
Consistent color neutrality -Proper polarizing effect with no color shift
Contrast-enhanced, more saturation is provided keeping the neutral color, and unnecessary reflection from the non-metallic surface will be removed.
Superlative multilayer-coating -Anti-reflection with Water-/Oil repellent, Fingerprint-resistance
Water repellent coating
Oil repellent coating
When shooting near the waterfront or in the rain, the lens repels water droplets for stress-free use.
This coating prevents fingerprints from sticking to the surface, and even if it does, it can be easily wiped off and is scratch-resistant.
