Knowledgebase
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In the White Level and Spyder3Elite 4 MQA: Contrast test how do I interpret the brightness and contrast ratio results?
Posted by Raphael Graf on 04 November 2010 11:56 AM
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Brightness White Black Contrast Kelvin 50% 67.4 0.15 449:1 5900 The interesting entries for 'brightness results' (i.e. White Luminance and Black Luminance) are: * for White Luminance what are the values at the minimum (0) and maximum (100) settings of the Brightness control. This shows the range of adjustment available. * for Black Luminance it is interesting to know what affect, if any, adjusting the Brightness control has on Black. Generally, the Brightness control on an LCD monitor is actually a Backlight control. Therefore it affects both White and Black Luminance. Generally you want the Blackest Black you can get, so having Black Luminance go up as the Brightness control is increased is not the best thing. However, since White Luminance is also increased, this generally maintains a constant "Contrast Ratio" and therefore the eye generally perceives just an increase in "Brightness" without seeing that Black is actually getting "less Black". This chart lists Contrast Ratio across the range of the Brightness control. Ideally the Contrast Ratio will stay constant so that adjusting the Brightness control doesn't change your perception of Tone and, hopefully, Black. | |
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