Smoke, Snow, fog, and sure supplies such as glass and silicon are clear, when imaging in SWIR. That means the atmospheric affect of fog and smoke disappears in the shortwave infrared (SWIR) spectrum. Whilst capturing photographs inside the SWIR lacks the colour information in the obvious region, SWIR visuals -that https://www.mindvision.ltd/Special-Camera/Short-wave-Infrared-Camera.html