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Lecture 16: Cameras and Lenses (117)

In raytracing engines, how do they simulate these lens designs? At first thought you could have a function that changes the direction of your rays slightly depending on your lenses. Edit: I looked it up. It seems a common way is just to physical model a (series of) lens and put it in front of your camera. This is interesting too, and corresponds to the philosophy of physically realistic rendering.

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