Originally Posted by cswiger
Yes. Bits per channel matters about as much as resolution, at least once you get over 1080p.
First of all thanks for your informative response, It helped me to understand quite a few things.
Secondly since I am a new user, I am not allowed to post links, so instead of using "." I will replace it with "(dot)" it may look stupid, but Im trying my best so I hope you just go along with it and appreciate it :-) Anyways
Unfortunately I am still lost and confused about the subject.
Main questions: 1. Is my panel true 32 bit afterall? if not then why?
2. how would consumers be able to test if their panels have the true bitdepth that the panel's manufacturer claims without spending ~$5000 on a spectrophotometer to analyze gradient test shade by shade since not even a gradient test (!!!) would be able to tell if the panel has that bitdepth or not due to frc? and how to test if frc is there or not? because after searching most tech-review websites..actually use gradient and artifact testing in a similar manner to the one here.
Anyways what I meant in the previous comment is that why bits per channel even matter when it's in the end just used to determine the actual bit depth of the display? if we assume a panel with 4 colors per pixel and 8bpc can achieve the same bit depth of one with 3 channels and 10bpc? (Actually 2 bit more deep since 8x4 =32 and 10x3=30) ? why shouldn't we look at the bit depth because it's the one that actually tells us how many colors and shades the panel can produce (2^24=~16.7 million)?
but then your explanation was that the additional channel has to be a primary color, but isn't white a primary color?
maybe you meant a primary color as in RGB (trichromacy) as you mentioned, but again there are pentiles with RGBG, Are they true 10 bit while rgbw isn't?
Also I didn't understand why these close shades of grey would be all infact a single shade of grey that gives the same output, the main counter argument about all this is the fact that W isn't a normal alpha channel and the resulting colorspace isn't the same as rgba (a for alpha), it still emits visible white light which can be combined with the remaining color using the 8bits stored of the w channel for control along with the 24 bits from the rest of the channels (rgb) to create more shades of the same color, as said here www(dot)mobilebeat(dot)com/understanding-rgba-vs-rgbw-in-two-simple-steps/
and here www(dot)reinhard-kietzmann(dot)de/rgbw_color_space(dot)html
Trichromacy and biovision seems like a weak excuse to me against the fact that you can combine more colors to result in more colors, it's like saying if we use an orange colorpencile over a yellow we won't be able to see the result.
what I meant is rgbw can be used to produce true 32 bit output, unlike what you suggested.
I'm sorry If I sounded mocking your observasion anywhere, I just want to educate myself about the subject and try to be as polite and mature as possible since it's my first appearance here, but it worths to mention that your explanation to the subject wasn't convincing enough and I didn't understand some of your explanation
and regarding the Pentile technology, why you assumed directly that a rgbw panel was automatically pentile? don't regular rgbw-rgbw exist at all? or you just assumed it is pentile because most pentiles use additional channel? don't 4 channel per pixel systems exist outside pentile or that's a pentile proprietary for Pentile? confusing.
Again sorry If I sounded mocking your informative observation but it wasn't convincing enough, add to the fact that there are true deep color rgbw large panels out there.
regarding the difference I didn't mean there isn't "banding" at all , there is a visible gradient but it isn't as noticeable as the bottom part, I think it's obvious that English isn't my native language, the difference was huge as I felt the upper part had more "depth" to it.
"your display is 6bit + 2 bit frc" sorry what does that even mean?
you mean that instead of saying it's actual 32 bit, it's 6bpc + frc for 24 bit content, and 6bpc + frc for deep color content, but again 6bpc for 4 channels would mean 24 bit, which is true color and 8 bpc would mean deep color, which would mean it's true 32 bit again (+ frc? sign me in for that panel, or no, because I consider dither to be nothing more but downsample)
excuse me, but does that even exist? (even if we assumed it was 3 channel rgb? I mean why in the hell a 8bpc RGB panel use 6 bpc + frc for true color content when it is actually 8bpc frc?)
More honest p.o.v: it all sounds illogical instead of saying a certain panel is truly 10bpc or truly deep color, I know about advanced frc and advanced dithering algorithms, I know how dithering and frc look like in comparison to native, and if my panel was using frc I wouldn't be able to notice the gradient of close, random sequential shades of random colors at close distances like I did, we are talking about a difference of x64, or 10^3 to the original, it would appear way smoother than native with less color depth and less details just like the example here if you display it on frc:
KEEP IN MIND: I am not saying frc can't compensate to view a similar result to the target, but the target will always be better and frc/dithering will always fail to 100% fully represent it, if frc can compensate all these shades in your theory then we wouldn't need higher bit depth at all, we can just use frc to compensate for any given number of shades
but it's a well known fact that no frc can't do that:
( en(dot)wikipedia(dot)org/wiki/Frame_rate_control , emphasis on the second paragraph)
you might say that I am underestimating frc afterall, maybe, because it's nothing like what people on the internet say or describe it as some sort of voodoo black magic made by the devil and used by evil manufacturers to trick customers (same goes to bayer filter, Pentile , etc) , I see people everywhere on tech-related websites chanting "Boo fake deep color, true color display in disguise with frc and dithering!" reaching the point of turning bit depth into a very controversial subject, more controversial than it ever was and leading to unnecessary misunderstandings and vortex(es) of twisted logic, and even the point of strong probabilities of falsely accusing true 10bpc/deep color panels as faked with frc unless it has a huge pricetag and fancy marketing terms attached to it, we don't know what's the truth anymore and which is which, between manufacturers who approach goals by cheating and the folks at the ultra end market who just sounds like the folks at headfi who use words like "PRAT" as a justification to them spending lots of money on average products.
Again I'd like to thank you for what you posted and for what you'll post in the future, it was helpful but as you can see there has to be a misunderstanding by either of us or a wrong point in your informative wonderful reply, in short terms I appreciate what you've done and for what you'll do here