The not-so-strong infrared filter does not block the complete visible light spectrum and enables recording with visible and invisible Ir components. The black and white contrasts are not as high.b+W Infrared filter - the special filter for extreme contrasts. With the B+W Infrared filter, the existing residual sensitization can be exploited for experimental black-and-white photos with high contrasts.Green leaves and grasses are reproduced from bright to white. A ""wood effect"" with dramatic contrast between clouds and sky can be achieved.Note: Infrared photography is not a substitute for a thermal imaging camera. The pictorial infrared photography described above is often confused with thermal photography.