B+W 1102756 39mm Basic IR Dark Red Filter

The B+W 39mm Basic IR Dark Red 092 Glass Filter is a specialized infrared filter designed for photographers who want to explore the dramatic, otherworldly look of infrared imagery. By blocking the vast majority of visible light and transmitting infrared wavelengths, this filter transforms ordinary scenes into striking compositions — green foliage renders as bright white, blue skies turn nearly black, and everyday landscapes take on a surreal, ethereal quality. The filter is built with optical glass mounted in a black knurled brass ring that provides a secure, easy-to-grip surface for threading onto your lens.

At 39mm, this filter fits a specific range of lenses commonly found on rangefinder cameras, compact systems, and some specialty or vintage lenses. B+W rates it as compatible with full-frame formats down to 24mm focal length without introducing vignetting. Because the filter blocks nearly all visible light, exposures will be measured in seconds rather than fractions of a second, making a tripod an absolute necessity. Manual focus is also recommended, as autofocus systems cannot reliably lock through the dense filter. As part of B+W's Basic line, it delivers genuine German-engineered optical quality without the multi-coatings found on their premium tiers — a sensible starting point for photographers testing whether infrared photography is a direction they want to pursue further.