"The human eye can detect light in the 400-700 nm range. Below 400 nm is ultraviolet, above 700 nm is infrared." - Axis Communications Academy, Network Video Fundamentals, 2022 "Visible spectrum: 400-700 nm." - Axis Technology Overview: Light and Imaging References: Axis Communications Academy, Network Video Fundamentals, 2022 (p. 17) Axis Light and Imaging Overview