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Thin circular glass filter with metal rim, 40.5mm diameter

Tiffen

Tiffen 405CP 40.5mm Circular Polarizer camera filter

SKU CH-GDRA-Q6QW1 MPN 405CP

A 40.5mm circular polarizer that deepens skies, cuts reflections and rotates for adjustable effect in colour or black-and-white photography

  • TypePolarizer
  • Size40.5mm
  • FeaturesEssential general-use outdoor color filter Produces deeper s
  • Deeper blue skies with 40.5mm polarizer filter
  • Rotate filter to control reflection reduction precisely
  • Essential outdoor colour filter for general photography
  • Combine with Red 25 for dramatic B&W
  • Suits wide-angle lenses for expansive scenes

What it is and who it fits

The Tiffen 405CP is a 40.5mm circular polarizer designed for lenses with that exact thread size. It serves photographers who want to deepen blue skies and cut glare from non-metallic surfaces in both colour and black-and-white work. The filter rotates freely so the effect can be tuned for each composition. Buyers needing a different thread diameter or a square-system filter cannot use this model.

Capacity and headroom

The polarizer handles typical outdoor lighting by reducing reflections and increasing contrast in skies and foliage. It reaches its limit when the sun is directly behind the camera or when extreme wide-angle lenses introduce uneven polarisation across the frame. Very low-light scenes may require exposure compensation that the filter itself cannot supply.

Build quality and daily use

The glass mounts in a lightweight aluminium ring that threads securely onto 40.5mm fronts without adding noticeable bulk. Standard cap and hood threads are preserved so existing accessories remain compatible. Rotating the front element is smooth and stays in position once set, making repeated adjustments practical during a shoot.

Highlights

  • Deeper blue skies with 40.5mm polarizer filter
  • Rotate filter to control reflection reduction precisely
  • Essential outdoor colour filter for general photography
  • Combine with Red 25 for dramatic B&W
  • Suits wide-angle lenses for expansive scenes

Specifications

BrandTIFFEN
Model405CP
TypePolarizer
Size40.5mm
FeaturesEssential general-use outdoor color filter
Produces deeper skies and minimizes reflections in black and white and color photography
Combine a Polarizer with a Red 25 for incredibly dramatic black and white landscapes
Can be rotated to achieve desired effect
Use the Tiffen Polarizer with the enhancing filter for more dramatic effects
Available for Wide Angle lenses
Shipping weight0.45 kg
Package size102 × 102 × 25 mm

Questions about this item

Will the 40.5mm thread fit the older lens I already own?

The filter uses a standard 40.5mm thread, so it will screw onto any lens with the same diameter regardless of age.

How can I confirm the polarising effect is active once the filter is mounted?

Rotate the front ring while looking through the viewfinder or screen; reflections should darken and skies deepen at the optimal angle.

Does the box include a Red 25 filter or must I buy it separately?

Only the circular polariser is supplied; a Red 25 filter is a separate purchase if you want the combined black-and-white effect.

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