Sorry this is late, I had to go buy a new card reader because mine gave up the ghost.
Fast Shutter Speed
I used a fast shutter speed to freeze the motion. These both required a great deal of light.
Slow Shutter Speed
The fact that both these images have to do with fire was coincidental.
Very Narrow Depth 'o' Feild
Relatively Far DOF
Near and Far Object in Focus Respectively