ISS is an integrator of both physical and electronic security systems in critical infrastructure facilities world-wide.ISS also provides services for Security, Risk and Vulnerability Assessments, System Maintenance, and Research and Development of new technologies and protocols for security systems and components.SS is an integrator of both physical and electronic security systems in critical infrastructure facilities world-wide.
Wiktionary (0.00 / 0 votes) Rate this definition: shutter speed (Noun). The duration of time for which the shutter of a camera remains open when exposing photographic film or other photosensitive material to light for the purpose of recording an image.
In your camera's viewfinder, a shutter speed of 1/4 is displayed just as 4. A shutter speed of 4 seconds is displayed as 4  (with a double quotes afterward to indicate whole seconds). Shutter speed is the amount of time that the camera is permitting light from the lens to hit the film or digital sensor.