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Just for clarification, yes your compueter can tell the difference between 4:2:2 and 4:4:4, especially doing green/blue screen work. But the human eye can not discern the difference. The color sampling of the human visual system is no better than 4:2:2. The real-world requirments for 4:4:4 recording are extremely limited. That's why there is only a handful of video cameras with this capability and they all cost mega dollars. Best- |
Mike Schell wrote "But the human eye can not discern the difference. The color sampling of the human visual system is no better than 4:2:2."
From past study, I recall the statement on color resolution perception to be attached to a distance called "normal viewing distance". Chroma subsampling artifacts, including false colors, out-of-gamut colors, bleeding, all of which can be animated, are not included in that color perception statement. Modern uses include viewing from a computer (less than a normal viewing distance), printing, cropping, and post-processing. In my case, I am interested in grabbing stills. From my experience with the venerable 4 Megpixel D2H DSLR in telephoto applications, it is easy enough to set a crop that no longer provides adequate resolution for print output even on a 4x6" or even display on monitors with modern sizes 24+"and 1920x1200 pixel densities. Come on guys. Go easy. Higher resolution is appreciated. |
Hi Gints-
Understood, but all we can do with the nanoFlash is provide the absolute best quality give the limitations of the incoming HD-SDI signal. That said, look for an announcement next week for yet another improvement in the nano video quality. Best- |
"improve video quality"???
hmm. now this sounds interesting. |
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