If you're seeking to capture the ethereal beauty of the infrared spectrum in your photography, the B+W 40.5mm Basic 093 Infrared Filter, Black Red 830, is your ideal tool. This specialized filter is designed to block the entire visible light spectrum, allowing only the pure infrared range to pass through. As a result, it produces images with striking contrasts and unique visual effects.The B+W 093 Infrared Filter is not just a filter it's a gateway to experimental black-and-white photography. By exploiting the existing residual sensitization of your camera, this filter enables you to transform ordinary scenes into extraordinary images. Green foliage and grasses are rendered from bright to white, creating a surreal, dreamlike effect.One of the most captivating effects achievable with this filter is the ""wood effect,"" where a dramatic contrast is created between clouds and sky. This effect adds depth and intensity to your landscape photography, making your images stand out.It's important to note that infrared photography, while visually stunning, is not a substitute for thermal imaging. The B+W 093 Infrared Filter operates in the infrared range, not the thermal range (which starts from about 10,000 nm and above). While both forms of photography utilize infrared radiation, they serve different purposes and produce different results.In conclusion, the B+W 40.5mm Basic 093 Infrared Filter, Black Red 830, is a powerful tool for photographers looking to explore the infrared spectrum and create images with high contrasts and unique visual effects..