![]() ![]() Display calibration is simply making adjustments to the video device in order to achieve a more accurate picture. Fortunately, most consumer displays include adjustment features that allow someone who knows what they're doing to make the picture behave closer to proper standards. Video industry standards and practices are regularly deviated from and ignored by manufacturers. Such over-accentuated pictures may dazzle the casual shopper but are not representative of correct pictures for regular viewing in the home. This could be compared to straining one's voice in a shouting match. They also adjust their products at the factory to attract attention to their TVs on a show floor alongside samples of their competitors' wares. Manufacturers often cut corners to reduce costs in order to compete with one another in the marketplace. Consumer TVs and projectors cost far less than professional displays. Therefore, consumers are left to guess what their TV picture is supposed to look like. Few consumers have ever seen a reference picture displayed on a calibrated broadcast or post-production monitor. Consumer displays typically are designed, manufactured and adjusted at the factory to appeal to focus groups and the uninformed masses. They must perform reliably for years, sometimes operating around the clock. Such professional video monitors cost up to tens of thousands of dollars for relatively small sized screens. They include in their design certain features that allow technicians to adjust them periodically (sometimes each day), using reference test signals, to insure picture accuracy. Video displays used by program professionals are designed, manufactured and calibrated to tightly adhere to industry standards. If at any step along this path, industry standards are deviated from, the program can become distorted. These standards and practices are intended to encourage and preserve: signal, equipment, and program accuracy, integrity, unity, consistency, and repeatability, all along the chain from program production, through post-production, to exhibition/broadcast/tape/DVD/etc., and finally to the audience (consumer). The video industry is governed and guided by standards, engineering guidelines, and recommended practices, defined by organizations such as: the Society of Motion Picture and Television Engineers (SMPTE), the International Organization for Standardization (ISO), the International Telecommunications Union (ITU), the Advanced Television Systems Committee (ATSC), etc. Invariably, each person alters the message slightly until the final recipient announces a garbled version that typically bears little resemblance to the original. Example: the parlor game where a circle of people pass a whispered message, delivered to the first person in the circle, then whispered to the next, on around the circle, and finally the last person announces what he thinks the message was. Any alteration of the message becomes a distortion of the original intent. The objective of any communication medium is to convey an original message as accurately and completely as possible. What is Video Display Calibration? The foundational and primary goal of display calibration is image fidelity (faithfulness to the original program). ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |