Measured in fractions of a second.
Some cameras will have shutter speeds of up to 8 seconds.
Some cameras will have a “B” (bulb) setting for longer
Most cameras will synchronize with flash at 1/60 sec.
Shutter Speed Differences
1/60 @ ƒ/5.6 ISO 50
1/4 @ ƒ/16 ISO 50
Lower (slower) numbers let more light into
Slower shutter speeds show motion.
Never hand-hold camera below 60.
Use tripod for shutter speeds under 60.
Use cable or remote release when using tripod.
Slower shutter speed
Usually SS less than 1/125 sec.
Camera follows movement of subject
Background will show movement parallel to subject’s
Subject is clear, in focus, action “stopped.”