The PLURA SPYDER4ELITE : DISPLAY COLOUR CALIBRATION is a display colour calibration hardware solution designed for photographers and creative professionals. An uncalibrated display can produce unexpected results. Working on a display that is periodically standardized through calibration enables true-to-life reproduction of images. Spyder4 features a patented, 7-channel sensor capable of calibrating a variety of display types including your monitor, projector, iPad and iPhone with high accuracy (and even your TV with a software upgrade). Spyder4 makes calibration straightforward. All you need to do is position the colour sensor on your display and step through the software wizard. The sensor measures a series of colours on your screen and creates a "profile" to standardize your display. You can compare images before/after calibration. Spyder4Elite software offers options for visual fine-tuning of displays, use of video standards (Cineon, NTSC, PAL), analysis of colour non-uniformity and change over time, use of L-star, iterative grey balance for the most accurate greys, unlimited choices for gamma and luminance settings.