It’s quite impressive how much one can get from a single RAW file. Just look at this one, in comparison to the original exposure. One would think there is no detail in the black parts, but there is so much of it :)

This is a single exposure, edited in Lightroom and Photoshop.

Technique: Photoshop edit, Number of exposures: 1, Camera Model: Sony a7R + Metabones MkIII Adapter, Lens: Canon 16-35mm F2.8, Focal length: 32mm, Aperture: 11, Middle exposure time: 5s, ISO: 100, Tripod used: yes, Location: 48.137096, 17.104672