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Thin clear glass circle in black metal ring, 77mm thread

JJC 77mm UV Filter Ultra Slim 12-Layer Coating

SKU CH-70CD-BYA4V

77mm UV filter with 12-layer coating and ultra-slim 0.12" frame prevents vignetting on wide-angle lenses while transmitting over 99.5% of light

  • Size77mm
  • Reduces bluish cast by absorbing UV light
  • Japanese optical glass with 12-layer coating gives 99.5% light transmission
  • Ultra-slim 0.12 inch frame prevents vignetting on wide angles
  • Double-threaded design allows lens caps and stacked filters
  • Protects front element from dust, moisture and scratches

77mm UV Filter for Wide-Angle Lenses

The JJC ultra-slim UV filter fits 77mm threads and helps absorb ultraviolet light to reduce the bluish cast of daylight. It also serves as a permanent protective layer that shields the front element from dust, moisture, oil and accidental scratches. The clear glass adds no colouration or contrast to the image.

Screw-On Installation With Double Threads

The filter mounts directly onto the lens filter thread and features a double-threaded design so you can still attach a lens cap, screw-in hood or stack another filter. Its 0.12 inch ultra-slim frame prevents vignetting on wide-angle zooms such as 24-70mm or 24-105mm lenses. No tools or adapters are required for fitting.

Optical Limits of a UV Protector

The 0.03 inch Japanese optical glass carries 12-layer multi-resistant coatings on both sides for over 99.5% light transmission and reduced ghosting. The coating hardness is rated 9H for durable scratch resistance. This filter does not reduce visible light exposure, cut reflections like a polariser, or enable long exposures like a neutral density filter.

Highlights

  • Reduces bluish cast by absorbing UV light
  • Japanese optical glass with 12-layer coating gives 99.5% light transmission
  • Ultra-slim 0.12 inch frame prevents vignetting on wide angles
  • Double-threaded design allows lens caps and stacked filters
  • Protects front element from dust, moisture and scratches

Specifications

Size77mm

Questions about this item

How can I confirm the filter is transmitting over 99.5% light after fitting it?

Shoot a uniformly lit scene with and without the 77mm filter at identical exposure settings; the histograms should match almost exactly, showing the 12-layer coating delivers the stated 99.5% transmission.

What comes in the box and what must I buy separately?

The package contains the 77mm ultra-slim UV filter with double-sided 12-layer coating and front/rear caps; you only need to purchase a step-up or step-down ring if your lens thread differs from 77mm.

Which version should I choose for an EF 24-105mm kit lens?

Select the 77mm ultra-slim model — its 0.12" thickness prevents vignetting at 24mm, the 0.03" Japanese optical glass and 12-layer coating maintain 99.5% transmission, and the double-threaded frame accepts your lens cap and hood.

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