When I look at the Milky Way I see a bunch of stars, some first magnitude. This picture is mostly illuminated “smoke”. Why the difference. If the smoke is because of the gathering of more light then the stars ought to be correspondingly brighter.
Also, I’ve see picture of celestial objects in which there was more redness.
Many variables involved: Type of film, speed of film, if film is even used, exposure, lens, filters, aperture, et al..................