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Home » Shop » Sigma 86mm WR Ceramic Protector Filter
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Sigma 86mm WR Ceramic Protector Filter

SKU: 5980086 Categories: , , Brand:

$499.00

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  • Clear Protection Filter
  • Prevents Damage to Lens
  • 1x Filter Factor, +0 Stop
  • 99.76% Transmittance
  • No Effect on Image
  • Clear Glass Ceramic Construction
  • Scratch- and Shock-Resistant
  • Water-Repellent Coating
  • 86mm Front Threads
  • Durable Acrylic Filter Case

Characterized by its uniquely durable construction, the 86mm WR Ceramic Protector Filter from Sigma is a clear filter designed to guard the front of a lens from impacts, scratching, and other elements. Developed using a clear glass ceramic substrate, this filter blends a high 99.76% transmittance value with greater hardness than chemically strengthened glass and greater flexibility than sapphire crystal glass. This results in a build that is shock- and scratch-resistant to withstand a variety of impacts while shooting. Additionally, a water-repellent coating has also been applied to resist water droplets and fingerprint smudging, as well as static electricity from attracting dust or other particles. Built for use in trying conditions, the unique design of the WR Ceramic Protector Filter helps to maintain the lens’ inherent image quality while affording a high degree of protection.

Clear protection filter guards the front lens element against a variety of impacts and scratching without affecting image quality.
Clear glass ceramic is a highly durable substrate that has a greater hardness than chemically strengthened glass and more flexibility than sapphire crystal glass.
Unique construction has a Vickers hardness number of 700HV, making it both scratch- and shock-resistant. This hardness also lessens the likelihood of scratching or chipping which can lead to the filter shattering.
Rather than only the surface structure being hardened, clear glass ceramic involves a heat treatment process that precipitates microcrystals of a mineral called spinel to achieve consistent, even strength across the entire filter surface. This strength also enables the design of the filter to be notably thin and lightweight.
A water-repellent (WR) coating has been applied that, in addition to preventing water and oil from adhering to the filter surface, also helps to minimize ghosting and flare. This coating reflects 0.24% of light, giving an overall transmittance value of 99.76%.
The WR coating also serves as an anti-static coating, which helps to repel dust or other particles from clinging to the filter surface.
The included hard acrylic case protects the filter when not in use and has been designed to prevent accidental, unwanted opening.

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Filter Type
Clear
Filter Factor
1x (0-Stop)
Circular Size
86 mm Filter Thread
Front Accessory Thread / Bayonet
86 mm
Coatings
Multi-Coating
Filter Material
Glass
Packaging Info
Package Weight
0.385 lb
Box Dimensions (LxWxH)
5.5 x 5.45 x 1.1″

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