Flash adds a short burst of light timed to the photograph.
Control subject illumination and, in suitable conditions, record a brief moment of motion.
When flash dominates subject illumination, a short flash duration can limit motion blur. Ambient light still contributes during the shutter time.
Compare a flash-lit moving subject with a frame using only continuous illumination.
Flash duration, sync limits and power behaviour vary. Significant ambient light can still leave a blurred trace.
Follow a connection to understand how these ideas fit together.
Continuous light contributes throughout the shutter time; a flash contributes a timed burst.
This comparison works in both directions.
A flash adds light to the scene during capture.
A sufficiently short flash burst can record a moving subject sharply.
Conditions: Flash dominates subject illumination; ambient light and flash duration are also considered.
Separate the source timing from the softness of its shadows.
Source check: . This records a check of the supporting references; it is not an expert endorsement.
Flash adds a short burst of light timed to the photograph.
When flash dominates subject illumination, a short flash duration can limit motion blur. Ambient light still contributes during the shutter time.
Flash duration, sync limits and power behaviour vary. Significant ambient light can still leave a blurred trace.