16-layer multi-resistant coating (MRC16): Increases light transmission to 99.4% and provides structural hardness
Nanotec nano coating: Repels dirt, water, and debris for easy cleaning
Magnetic adapter ring: Enables fast, secure attachment and removal of Mark II magnetic filters
Weather-sealed construction: Withstands extreme wind, salt, water, and dust for long-term durability
Summarized by Shop
A Magnetic Adapter Ring is essential for using Mark II Magnetic Filters. Click here to learn more. Critically Sharp SCHOTT B270 The X4 features SCHOTT Ultrawhite B270 optical glass made in Germany. Our state-of-the-art multi-resistant coating has 16-layers (MRC16) which increases light transmission to 99.4% and creates a protective
Material
Schott B270 optical glass, brass
Light Transmission
99.2% (visible range)
Frame
Ultra-slim double-threaded 3.1 mm traction frame
Coating
16-layer MRC16 and Nanotec nano coating
Weather Sealing
Yes
Compatibility
Magnetic adapter ring required for Mark II magnetic filters