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.
Aperture and shutter speed together determine exposure. Exposure is measured in exposure value (EV), also called stops. Multiple combinations of shutter speed and aperture can give the same exposure: an exposure with a shutter speed of 1/250 s and f/8 is the same as with 1/500 s and f/5.6; or 1/125 s and f/11.