Shutter Speed

• The time period during which light is sensed

• 2X time is 2X light energy

• Speeds from about 30 to 1/4000 second

• Things moving faster than the shutter blur

(that's everything if you move the camera ;-)

• Longer than 1/30, brace the camera

(use a tripod, lean on something, etc.)

• Image stabilization helps about 4X