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Ultra-slim 37mm UV filter, black aluminium ring, clear Schott B270 glass

Sirui

Sirui Ultra Slim S-Pro Nano MC UV Filter 37mm

SKU CH-47WX-SZ1QM

37mm UV filter with 1.5mm German B270 Schott glass, 22-layer nano coating and front thread for stacking

  • Protects lens from scratches, dust and fingerprints
  • Filters UV radiation for less haze and brighter colours
  • German B270 Schott glass ensures exceptional clarity
  • 22-layer anti-reflection nano-coating reduces flare
  • 5 mm slim frame suits wide-angle lenses

Ultra Slim 37 mm UV Protection

The Sirui Ultra Slim S-Pro Nano MC UV Filter threads onto 37 mm lens fronts to shield the front element from dust, scratches and fingerprints while blocking ultraviolet radiation that causes atmospheric haze. German B270 Schott glass just 1.5 mm thick maintains optical clarity and the multicoated, 22 layer nano coating minimises reflections for brighter, more neutral colours.

Build Integration with Front Thread

A front thread on the 2 mm visible frame allows stacking of an additional filter, sun visor or lens cover without increasing vignetting on wide angle lenses. The ultra slim profile keeps the filter close to the lens barrel so it clears most hoods and matte boxes, leaving the filter thread free for further accessories or a protective cap.

Coating Stack Changes Daily Use

The 22 layer anti reflection nano coating cuts flare and ghosting in backlit scenes, while the six layer multicoating resists water spots and oily fingerprints for easier cleaning. Together they preserve contrast and colour fidelity so the filter can stay mounted permanently as a protective barrier without degrading image quality.

Highlights

  • Protects lens from scratches, dust and fingerprints
  • Filters UV radiation for less haze and brighter colours
  • German B270 Schott glass ensures exceptional clarity
  • 22-layer anti-reflection nano-coating reduces flare
  • 5 mm slim frame suits wide-angle lenses

Specifications

No published specifications for this item yet.

Questions about this item

Will the 1.5mm glass thickness vignette on my wide-angle lens?

The 1.5mm glass and 2mm visible metal frame are designed for wide-angle lenses, minimising vignetting at 37mm thread size.

Does the 22-layer nano coating reduce flare when shooting all day in bright sun?

The anti-reflection nano coating with 22 layers cuts ghosting and flare, maintaining contrast during extended daylight shooting.

My lens has a 37mm front thread — will this filter screw on directly?

Yes, the filter uses a standard 37mm thread, so it mounts directly on any lens with a matching 37mm front thread.

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