B + W Filter Company 40.5mm Master HTC Circular Polarizer MRC Nano camera filter

40.5mm Master HTC Circular Polarizer MRC Nano

This B+W filter is a high-transmission circular polarizer designed for lenses with a 40.5mm thread. It enhances colour purity and saturation while reducing reflections from non-metallic surfaces such as water, glass and glossy paint. The rotating mount lets you control the polarisation effect visually through the viewfinder or monitor. It is compatible with nearly all modern cameras that use beam splitters for TTL metering or autofocus.

Upgrade from standard polarizers or no filter

Standard polarizers often cut more light and lack the Multi-Resistant Coating that reduces flare and repels water. The High Transmission Circular design keeps the filter factor between 2 and 3, equivalent to 1 to 1.5 f-stops, so exposure compensation stays minimal. The jump is worth it when you need cleaner skies, deeper contrast and the ability to see through reflections without heavy post-processing.

Landscape and architectural photographers needing

Photographers who shoot landscapes at a 90-degree angle to the sun will get maximum polarisation for vivid skies and foliage. The slim 40.5mm thread suits smaller-diameter lenses on mirrorless or compact systems. Shooters who require larger thread sizes, variable ND functionality or infrared transmission should look at other filter types.