sugar2150 sugar2150
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一直认为AN卡色彩方面没区别,直到我看到这个~ 英文大佬来解释下~ 各段是不连续的,只发含A卡N卡有关的语句 These grey range results may be not very good with Dell monitors. The culprit is DUCCS. On the previous page, we discussed that DUCCS only takes 14+11+11+11 measurements to capture uncalibrated TRC. If Dell cannot guarantee a nearly perfect uncalibrated response for CAL1 or CAL2 like NEC or Eizo, then DUCCS should take more measurements. Since DUCCS does not take more measurements, if you have an uncalibrated monitor with grey colorations (usually in green-magenta axis) then DUCCS may not be able to fix it and get a perfect neutral grey. This is a DUCCS issue and not a monitors’ issue, because ArgyllCMS with an AMD graphics card is able to get perfect neutral grey in such monitors. ArgyllCMS can measure up to 96 (of 256 grey values) measurements of each grey, red, green and blue uncalibrated response. That means every deviation is measured, so they could be corrected by calibration curves. Without a new DUCCS version that actually fixes these issues, you will need an AMD / ATI graphics card (Radeon or Firepro) or an NVIDIA Quadro to fix these grey range and whitepoint issues with a GPU LUT calibration. With that hardware, GPU calibration will correct whitepoint if needed and get perfect neutral and smooth grey gradients akin to a high-end hardware calibration. This is possible because of high bit depth dithering LUTs inside those graphics cards AND dithering. “Dithering” is a very important feature to encode high bit depth results into graphics card output, as explained before. Later on you will see how to do this with ArgyllCMS / DisplayCAL. GPU Re-calibration If DUCCS is unable to give you an acceptable whitepoint or grey range, then you can fix it with calibration curves in GPU LUT. If your DUCCS calibration is OK, skip this section: you don’t need it. As discussed in previous sections, you’ll need an AMD / ATI graphics card or a NVIDIA Quadro (not NVS Quadro) desktop graphic card versions (NVIDIA GeForce 1000 series are an exception). Without this kind of hardware, you may get banding artifacts (I mean you WILL get banding artifacts because you have color tint issues on grays right now). First of all, you must need to know that whitepoint GPU LUT correction lowers maximum brightness output, since we are going to limit one or two channels max output to get your desired white. With GPU re-calibration, you may fix the whitepoint in factory calibrated OSD modes like sRGB or AdobeRGB. 大致意思是除了1000系以外的N卡,在色彩表现方面真不如AMD啊
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