= 12. Semi-Interquartile Range. The semi-interquartile range of a distribution is half the difference between the upper and lower quartiles, or half the interquartile range. Therefore, from the example above, it was determined that the interquartile range = 12.
Electronic Viewfinders (EVFs) An EVF is basically a very small screen inside a viewfinder, so you can put your eye up to the viewfinder and use it like a traditional camera. On most cameras with EVFs you can switch the view between the viewfinder and the rear LCD screen interchangeably.
Welcome iLumen is focused on developing novel endoscopic technologies to address broad market opportunities. About the Technology. iLumen is developing a novel endoscopic based imaging technology designed to add lateral and retrograde view capability to current forward view devices. This technology is known as Retroview, and holds the promise to provide additional viewing capabilities with minimal costs, simplicity of use and adaptability across existing endoscope infrastructure.