No idea, but it's not necessarily "regular" cameras. For monitoring agriculture, infrared imagery is often used due to the difference reflective properties of v

No idea, but it's not necessarily "regular" cameras. For monitoring agriculture, infrared imagery is often used due to the difference reflective properties of vegetation (and other stuff) at different wavelengths; having multiple type of pictures, at different wavelengths, is useful to get better estimates of what you're looking at than what you would achieve with just visible light.