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Small cylindrical lens with M12 x 0.5 mount, plastic and glass body, 85 degree view

Unique-Bargains

Unique-Bargains 4mm M12 x 0.5 F2.0 85° Fixed IR Board Lens

SKU CH-ECFX-YCDX6

A 4 mm focal length M12 x 0.5 mount lens with F2.0 aperture and an 85° field of view for CCTV cameras

  • 4mm focal length narrows the view to 85° for closer subject detail
  • F2.0 aperture gathers more light for clearer low-light footage
  • M12 x 0.5mm thread fits compatible cameras for direct replacement
  • Plastic and glass construction keeps weight low while maintaining optical quality
  • Simple thread-in design allows quick lens swap without special tools

4mm M12 x 0.5 Fixed IR Board Lens

This 4mm M12 x 0.5 Fixed IR Board Lens is a surveillance accessory designed for CCTV security cameras. It suits installers who need a direct replacement lens with a standard M12 x 0.5mm thread mount. The lens uses a plastic and glass construction weighing 5g and offers an F2.0 aperture for light gathering.

Replacement lens for existing CCTV cameras

The lens threads in easily after the previous lens is removed, making it a straightforward upgrade for compatible cameras. It brings the view closer to the action than a wide-angle lens, improving subject detail in surveillance scenes. The jump is worth it when the current lens provides too broad a field of view for the monitoring area.

85° angle of view on 1/3" format

The 4mm focal length delivers an 85 degree angle of view on a 1/3" sensor format. This comfortably handles mid-range monitoring where a narrower perspective is needed over an expansive one. It runs out when a wider panoramic view or longer telephoto reach is required for the installation.

Highlights

  • 4mm focal length narrows the view to 85° for closer subject detail
  • F2.0 aperture gathers more light for clearer low-light footage
  • M12 x 0.5mm thread fits compatible cameras for direct replacement
  • Plastic and glass construction keeps weight low while maintaining optical quality
  • Simple thread-in design allows quick lens swap without special tools

Specifications

BrandUnique Bargains

Questions about this item

Will the M12 x 0.5mm thread fit my camera housing?

This lens uses an M12 x 0.5mm mount. Verify that your camera housing accepts the same thread pitch before purchase.

How do I install the 4mm F2.0 lens without cross-threading?

Remove the old lens completely, then thread the new 4mm lens in by hand until it seats smoothly. Do not force it.

Does the glass element need special cleaning to keep the 85° view clear?

Use a soft lens cloth and optical cleaner on the glass surface. Avoid abrasive materials that could scratch the coating.

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