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Custom Resolution Utility (CRU)
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12-23-2015, 05:28 AM
(Last edited: 12-24-2015, 05:02 AM by zamar19)
Post: #1879
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RE: Custom Resolution Utility (CRU)
@ToastyX
Thanks again. I'll follow your advice. Why YCbCr 4:4:4 has a better chance to show 4:4:4 than FullRGB 4:4:4, despite Full & Limited RGB are the only options in FirePro CC for 4K reso, while YCbCr 4:4:4 options also show up for lower reso? Does it require lower bandwidth - your Color Correction article doesn't mention it? See this monitor EDID below. How adding 4:4:4 output and 10-bit color would add to required bandwidth? Will it still fit into ~400 Mhz limit, or these specs don't affect it much? FirePro CC shows DPF choice 8, 10, 12bpc for the monitor at lower reso, but only 8bpc for 4K@30Hz, so is it restricted by the DP-to-HDMI adapter bandwidth? Would it allow switching to 4K 10-bit via Dual DVI? In FirePro CC there're 2 sections handling 10-bit color, presumably via DP1.2 and Dual DVI. One is DFP Color Depth, which to my understanding sets in Registry the user preferred supported by the monitor color depth. At 4k reso its stuck at 8bpc only, possibly due to my current setup bandwidth limit. Another section is 10-bit pixel output, which seems to set the GPU signal actual pixel color depth. If GPU can send 10-bit and you force it at the source, then you can select the signal receiving monitor property to match it. In Radeon cards, if only DFP CD options are shown, but no GPU 10-bit option, then the driver won't send a 10-bit signal regardless what signal you select for the monitor to accept. Does CRU allow to activate the GPU option in Radeon, not only DFP option? In FirePro I can set it now to 10-bit pixel out, but the display blacks out (not implemented in current Win 10 driver & insufficient bandwidth?). Also, how setting Wide Gamut Profile or ICC in Windows Color Management - Advanced - Device Profile and CRU may add into this? This monitor 10-bit panel supports Color Gamut & Saturation Level 72% of NTSC CRT level, so it seems qualified as Standard rather than Wide Gamut RGB. How much extra bandwidth requires Wide Gamut to pass wider color saturation values range from GPU? May be none, if each pixel saturation is passed as one value? I assume, Wide Gamut option would appear in FirePro CC Pixel Format settings if supported by the monitor, or does one need to add it in Custom extension block? Should it be supported by the video card and driver too, and what would confirm such support? Would using YCbCr 4:4:4 limit the monitor Color Gamut range compare to FullRGB 4:4:4? Do you plan to add an ICC Profile for this monitor? Its gettings quite popular due to low cost. Pls consider adding more Color Gamut info to your ICC article, since most users wouldn't know the difference btw Color Depth (pixel bitness affecting number of intensity shades per reproducible color) and Color Gamut (measuring min and max saturation intensity of each color, and affecting saturation level of each color shade), and how visible on a given monitor Gamut is affected not only by ICC, but GPU color settings and available ports bandwidth.  Seiki 42" 4K EDID Code: Monitor #1 [Real-time 0x0051] |
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