= 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.
Remember, the viewfinder is the single most important user interface on the camera. The user is you; the viewfinder is what you must use to connect your subject with your photograph. If you enjoy looking at the world through the camera, youâll very likely take more, and better, pictures. The viewfinder is important.