It seems like the Monte Carlo algorithm described here does not account for aberrations and other defects that could occur. In order to account for aberration in the simulation, can we say perturb the ray from x' to x'' by a small amount (we'd do this for every ray of course)? My guess is that the perturbation amount is something that would be determined through experimental characterization of the individual lenses in the compound lens.
Edge7481
Prof Ng mentioned that we trace rays through lenses with snell's law. Is that a specific case of using BSDF but assuming that lenses behave well? (i.e. the lens doesn't reflect, scatter, flare). Are there cases where snell's law produces a noticeably different render than a real lens?
It seems like the Monte Carlo algorithm described here does not account for aberrations and other defects that could occur. In order to account for aberration in the simulation, can we say perturb the ray from x' to x'' by a small amount (we'd do this for every ray of course)? My guess is that the perturbation amount is something that would be determined through experimental characterization of the individual lenses in the compound lens.
Prof Ng mentioned that we trace rays through lenses with snell's law. Is that a specific case of using BSDF but assuming that lenses behave well? (i.e. the lens doesn't reflect, scatter, flare). Are there cases where snell's law produces a noticeably different render than a real lens?