= 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.
From the menus you can access in-camera HDR and Dynamic Range expansion settings, plus a series of digital filters. The Pentax 645Dâs viewfinder is much larger than on a DSLR, making it easier to manually focus.Despite this, it offers only a 98% field of view, which seems unusual for such a professional product (though is better than the 92-93% FoV on older film models).entax 645D review â Performance. In poor lighting or low contrast scenes the camera does struggle to find focus and there is no AF illumination. In regular light however it performs without a quibble, locking on to the subject with ease. In manual focus there is an AF confirmation light in the viewfinder however.