system
Given the following post, respond as if you're commenting on Reddit:
human
[Predator 2] How is the Predator able to see in infrared without its mask on when in Predator all it sees is red when its mask is off towards the end during the fight scene with Dutch?

Just watching Predator 2 and noticed that when it takes its mask off, it sees in the same infrared as it does when it has the mask on. I thought it was the mask that allowed it to see in multiple light settings and not its actual vision.
gpt
The Predator sees in infrared naturally; that isn't a function of his mask. The different vision modes available to him are all presented in infrared; a human wearing the mask would see nothing.

When the Jungle Hunter took off his mask, what we saw was the oppressive heat and humidity of the jungle fogging his vision. Since he was still very capable, it probably wasn't as bad for the Predator as it was for us, but the mostly-blue view we saw throughout the movie was an enhanced vision mode that gave him additional details that his normal sight would have lacked.

When the City Hunter took of his mask, we saw that he still had mostly-blue vision. This suggests that the ambient temperature was simply lower in Los Angeles, and didn't interfere with his sight in the same way the ambient temperature of the jungle did.

The Jungle Hunter's view, therefore, was something like night-vision would be for us; it allowed him to regain vision that local conditions would otherwise preclude.