What type of filter is required for a "night shot" capable camera to take full infrared photographs?

For a camera to take full infrared photographs, a specific type of filter is needed to effectively block visible light while allowing infrared light to pass through. The Wrattan #87 filter is designed specifically for this purpose. It is a deep red filter that restricts the transmission of the visible spectrum and strongly transmits infrared wavelengths. This makes it suitable for capturing the infrared spectrum, commonly used in night photography and infrared photography.

The other filters mentioned do not serve this particular function. A polarizing filter is typically used to reduce reflections and enhance color saturation in visible light photography. A neutral density filter reduces the overall intensity of light without altering colors, which can help prevent overexposure but does not specifically aid in capturing infrared light. A UV filter primarily blocks ultraviolet light, serving as protection for the lens without influencing infrared photography. Thus, the Wrattan #87 is the correct choice for full infrared photographs.