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Audio and Video Talk
Audio Visual Technology
screen calibration
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<blockquote data-quote="joel" data-source="post: 31881" data-attributes="member: 406"><p>Newer LCD's are a lot better than old ones, so drift a little less. it also depends on usage. </p><p>Backlights have a limited life and LCD's do occasionally suffer from a sort of screen burn ( individual pixels loose the ability to fully twist)</p><p>Calibrating every month or two sounds to me like someone wants to make too much money.</p><p>What affects on screen colour more than inherent screen problems are lighting conditions, so unless you have a room whose light never changes, you will always see some on screen differences, particularly in extremely dark areas. </p><p></p><p></p><p>The benefit of using a calibration tool is that i can tell you exactly how much R, G or B there is in virtually any level of grey, and from here (as long as there are controlls for this) correct if a colour is off against a reference standard.</p><p></p><p>BTW I've found that an actual contrast ratio of around 50 to1 when measured in an ordinary daylight room is pretty good.</p><p>I measured a LCD screen in good measurement conditions at less than this and its manufacturer claimed a Dynamic contrast ratio of 50 000 to 1.</p></blockquote><p></p>
[QUOTE="joel, post: 31881, member: 406"] Newer LCD's are a lot better than old ones, so drift a little less. it also depends on usage. Backlights have a limited life and LCD's do occasionally suffer from a sort of screen burn ( individual pixels loose the ability to fully twist) Calibrating every month or two sounds to me like someone wants to make too much money. What affects on screen colour more than inherent screen problems are lighting conditions, so unless you have a room whose light never changes, you will always see some on screen differences, particularly in extremely dark areas. The benefit of using a calibration tool is that i can tell you exactly how much R, G or B there is in virtually any level of grey, and from here (as long as there are controlls for this) correct if a colour is off against a reference standard. BTW I've found that an actual contrast ratio of around 50 to1 when measured in an ordinary daylight room is pretty good. I measured a LCD screen in good measurement conditions at less than this and its manufacturer claimed a Dynamic contrast ratio of 50 000 to 1. [/QUOTE]
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Audio and Video Talk
Audio Visual Technology
screen calibration
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