NanoFlash features wish list

Mike Schell · November 5th, 2009, 07:11 PM

Quote:

Originally Posted by Gints Klimanis

Anyone would rather have the 4:4:4 still than the 4:2:2 still.

Hi Gints-
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-

Gints Klimanis · November 5th, 2009, 09:36 PM

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.

Mike Schell · November 6th, 2009, 11:34 AM

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-

Aaron Newsome · November 6th, 2009, 05:15 PM

"improve video quality"???

hmm. now this sounds interesting.

November 5th, 2009, 09:36 PM	#32
Gints Klimanis Inner Circle Join Date: Jun 2003 Location: San Jose, CA Posts: 2,222	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. Last edited by Gints Klimanis; November 6th, 2009 at 01:21 PM.

November 6th, 2009, 11:34 AM	#33
Mike Schell Convergent Design Join Date: Apr 2005 Location: Colorado Springs, CO Posts: 869	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- __________________ Mike Schell Convergent Design

November 6th, 2009, 05:15 PM	#34
Aaron Newsome Major Player Join Date: Jul 2009 Location: Rancho Santa Margarita Posts: 590	"improve video quality"??? hmm. now this sounds interesting.