3 ms·
They seem to be a bit confused with optics. What they minimise by reducing the aperture size is the spherical aberration, if they used a spherical lens as pictu
by 4gotunameagain 5y ago
They seem to be a bit confused with optics. What they minimise by reducing the aperture size is the spherical aberration, if they used a spherical lens as pictured.
Coma is present on parabolic mirrors, which do not exhibit spherical aberration or any shape related aberration when the rays are parallel to the boresight of the camera, but only when at an angle.