In practice, however, most omnidirectional cameras cover only almost the full sphere or, in the case that they cover a full sphere, not all captured light rays intersect in a single focal point.
They cover a full sphere. Most omnidirectional cameras cover only almost the full sphere. This is in the case. This is in practice. This is however. Most omnidirectional cameras cover only almost this. This is in the case. This is in practice. This is however. All captured light rays intersect in a single focal point. This was in practice.