"Do the Predators see in infrared naturally, or is the infrared a function of their visor? What do they see when their visor comes off?" -Victoria Blake
In the first Predator film, when Arnie and the Predator go mano a mano, doesn't the Predator take off its helmet, and we see a POV shot of the Predator from viewing in infrared then as its helmet comes off to a pure red infrared-ish view? If that red view is indeed the Predator's true eyesight, I hope we don't see some dastardly approach in a future Predator novel concerning its real eyesight. Sloppy sloppy sloppy.