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by jcalx 452 days ago
Panini projection is built into Unity and Unreal. From the documentation from the latter [0] you can see how it's essentially a cropped fisheye-ish projection. That doc also has (in my opinion) a clearer comparison on how the two projections differ, especially looking at the layout of the square tiles on the floor in the first set of pictures.

[0] https://dev.epicgames.com/documentation/en-us/unreal-engine/...