valonjälkiä
Valonjälkiä refers to the phenomenon of light trails or streaks that can be observed in photographs, particularly in long exposure shots. These trails are not inherent properties of light itself but rather the result of how light interacts with the camera's sensor during the exposure period. When a light source moves across the frame of a camera set to a long exposure time, the sensor captures the path of that light over the duration of the exposure, creating a visible trail.
Common sources of valonjälkiä include moving vehicles, stars, and even the moon. In astrophotography, the movement
The creation of valonjälkiä is a deliberate photographic technique used to convey motion, add artistic flair,