The lens system in a camera forms a real, inverted image
\on the sensor or film.
(Hint: If an image is not real, then it can't be captured on
a sensor or film.)
A plane mirror doesn't produce a real image.
I'm not sure about a convex spherical mirror. I don't think it can.
A concave spherical mirror can produce a real image.
(That's what happens in every reflecting telescope.)
