Telephoto = In order to make distant objects appear larger, cameras require a telephoto lens.
SD Card= A flash memory card that provides storage on some IP cameras, digital cameras, cellphones and PDAs. SD Cards…
Resolution= Refers to how much detail can be captured on a camera or displayed on a monitor. Cameras typically capture…
Remote Surveillance= The ability to view cameras from an alternative location. Many current DVRs have an on-board Ethernet (RJ45) part,…
PTZ = Pan, Tilt and Zoom. PTZ cameras have the ability to be "remotely controlled" allowing a user to take…
Progressive Scan = The process whereby a picture is created by scanning all of the lines of a frame in…
Patrol = Cameras that have the ability to PAN can often also support a "Patrol" sequence. Often, cameras set to patrol…
PAL = Television format for most of Europe and South America.
Optical Zoom= Changing the focal length of a camera by adjusting the physical zoom lens. The higher the optical zoom,…