The IPS-5D is sensitive to infrared light, but requires and external IR source - it does not contain an IR LED array.

Aspherical Lens

Most users focus a camera lens using visible light. While infrared (IR) light is present in all visible light, the amount is so small no one needs to consider it one way or the other. Visible light and IR light have different wavelengths and strike the lens at slightly different areas, so the perfect focal point for an image created by IR light will be slightly different than for the same image in visible light. This makes IR images sometimes appear slightly out of focus - a phenomenon known as "focus shift". An aspherical lens compensates for IR focus shift with its shape. Instead of using a perfect sphere model when creating the lens, a slightly flattened sphere shape is used, hence the term aspherical. In operation, this lens shape guides IR light to the same focal point used by visible light. This makes an image formed by IR light just as clear and sharp as images formed by visible light.