These images were captured using an infrared-converted camera. In short this means that  the filter which only allows visible light to  reach  the sensor is replaced by one which lets in only wavelengths above a set  value. This camera is only sensitive to  wavelengths of 720 nm  and above which includes just a bit of the visible spectrum and infrared wavelengths. The resulting images can be processed to  high contrast monochrome or false colour by using what  is left of the visible wavelengths. The result is a different view on  the world where lush  greenery  is turned into a white snowscape and blue skies go  dark.