Mermaid Reef: Sony a7sii + Stack, Blend, and Composite

This photo is taken in Arrecife de las Sirenas, Almería (Spain) with a simple 61 seconds exposure, at ISO 5000. At 4 am in the place of the shot you can't see anything, it's all black, now you understand why these settings are so overstated. The lens used was a 14mm wide-angle at F2.8 to be able to capture a large field of vision in wide-angle.