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Circular 77mm UV filter with ultra-slim magnalium ring and clear Schott B270 glass

Urth

Urth 77mm UV Plus+ Camera Filter

SKU CH-RKFH-4W78M

A 77 mm UV filter cuts 99.6 % of ultraviolet haze for sharper images while shielding the front element from scratches, oil and water using Schott B270 glass with a 30-layer nano coating

  • TypeUV, Haze & Protection
  • Cuts 99.6 % ultraviolet haze for sharper images
  • German Schott B270 optical glass ensures high clarity
  • 30-layer nano coating resists water oil and scratches
  • Ultra-slim magnalium ring prevents vignetting on wide lenses
  • Double-threaded design allows stacking with other filters

77mm UV Protection Filter

The Urth 77mm UV Plus+ filter cuts 99.6 % of ultraviolet light to remove blue haze and sharpen detail, especially on hazy days, while shielding the front element from scratches, oil, knocks and water. It is built for photographers who want a permanent protective layer that does not alter exposure settings. German Schott B270 optical glass provides the optical foundation.

30-Layer Nano Coating and Ultra-Slim Ring

A 30-layer nano coating on the Schott B270 glass resists water, oil and abrasions, making the surface easier to clean and helping maintain sharpness over time. The ultra-slim magnalium ring reduces the risk of vignetting on wide-angle lenses, and the double-threaded design allows a lens cap or hood to be mounted on top of the filter without removing it.

Simple Screw-On Installation

The filter threads directly onto any 77mm front thread, and the double-threaded construction lets you keep a cap or hood in place, so the filter can stay on the lens permanently. The slim magnalium ring minimises vignetting on wider optics, though extremely wide lenses may still show corner shading at small apertures. Over-tightening can bind the lightweight alloy ring, so finger-tight is sufficient. Not suited for buyers who need circular polarisation, neutral density effects or a different thread size.

Highlights

  • Cuts 99.6 % ultraviolet haze for sharper images
  • German Schott B270 optical glass ensures high clarity
  • 30-layer nano coating resists water oil and scratches
  • Ultra-slim magnalium ring prevents vignetting on wide lenses
  • Double-threaded design allows stacking with other filters

Specifications

TypeUV, Haze & Protection

Questions about this item

Will the 30-layer nano coating eventually wear off and need the filter replaced?

The 30-layer nano coating resists water, oil and abrasions for long life and easy cleaning; it protects the Schott B270 glass beneath and is not a consumable layer that requires scheduled replacement.

What limits image quality first when shooting all day with this 77mm UV filter?

The filter cuts 99.6 % of ultraviolet light to remove blue haze and sharpen details without affecting exposure settings, so the practical limit remains the lens and sensor rather than the filter itself.

Does the ultra-slim magnalium ring trap heat or cause vignetting during continuous use?

The ultra-slim magnalium ring is designed to avoid vignetting on wide-angle lenses and adds negligible thermal mass, so it does not trap heat or degrade performance during extended shooting sessions.

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