In Mission Impossible III, I notice very often that bokeh is not circular, but has a shape of an oval. For example, here are two images where such bokeh is noticeable: Does it necessarily mean ...
I understand that an anamorphic lens "stretches" an image when it is recorded, but when it's played back, it's "un-stretched" so that it looks normal. But with images shot with anamorphic lenses, ...
For example: What contributes to this streaking? Why doesn't spherical lenses have this effect? How is it used in photography?