Here’s an example of a low light, existing ambient light photo of a Chicago fireman working at a nighttime fire scene.
Minimal but distinct and recognizable detail is visible in the show area which is the firefighter and the Snorkel aerial. Larry Shapiro photo
In this next version, I turned it into a firefighter silhouette in the Snorkel basket to create a different feel.
After making a selection of the shadow areas, I created a mask in Photoshop and filled it with black to create the solid silhouette. Larry Shapiro photo