CCTV stands for "Closed Circuit Television System". It is a reading system where whatever you want to read is viewed by a camera and presented on an internal or external monitor. This viewing is live which means that the image will change the moment you change / move the image. CCTVs can be used from viewing small notes and photos to reading books, depending on the CCTV. Generally speaking for viewing photos the magnification should be as small as possible (some units go down to 2-3x magnification), but for reading of texts, depending on your eye condition, the magnification could go up to above the 35x. The bigger the magnification needed, the more you need to move the text and the better it is to have a big monitor. On the other hand, the bigger the monitor, the less portable the unit is and not everybody will be helped with a big monitor, for example people with for example tunnel vision. It is important to orientate and test which model is best.
You can choose CCTVs with a built-in monitor that fit into a pocket: of course the monitor is small here, but it is really handy to take along. A portable CCTV is either meant to read during travel (built-in batteries), or to easily take along to a different location and connect to a television or monitor and is bigger than the Pocket CCTV. There are CCTVs that use the display of a (laptop) computer as display - very handy if you need a laptop and also want to read print / notes. There are Transportable CCTVs with a relatively big 15" screen that still can be taken from A to B. And finally, there are desktop CCTVs. These are not meant to move around, but do offer the ultimate in reading comfort if you want to read volume, like big books. The monitors are generally speaking large (17" or larger) |
