This. RGB is an inefficient way to represent the signal. YCbCr conversion isn't lossy.
You'd better read the article. What you said is simply not true.
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This. RGB is an inefficient way to represent the signal. YCbCr conversion isn't lossy.
It is indeed somewhat lossy but if care has been taken the impact is negligible and definitely of a totally different level than the impact of chroma subsampling.You'd better read the article. What you said is simply not true.
@Thomas Smet
Things aren’t as dire as you think. There are currently many RGB codecs available and they play fine in all current NLE’s and media players. Ex: Quicktime uncompressed 8-bit and 10-bit, UT RGB & RGBA, Lagarith RGB, to name a few. Also RGB transmits just fine over current HDMI cables at all resolutions up to 4K. Proof: Most current graphics cards and computer monitors have HDMI ports and it’s RGB signals that are flowing between them. Furthermore, you can connect the HDMI output of a computer into the HDMI port of a TV and get a picture. Once again, this is RGB data that’s flowing.
The infrastructure for an RGB workflow is currently all in place. Now we just need somebody to start implementing it in cameras.
Raw and RGB are not identical, at least not for a Bayer sensor.As a former VFX artist I would love to see RGB but really we have RGB. It is called raw.
Raw and RGB are not identical, at least not for a Bayer sensor.
To go from the sensor output of a Bayer sensor to RGB you only have one color per pixel available, the other two colors have to be interpreted from neighboring pixels but this interpretation introduces a notion of a practical color space because the values have to be weighted.
Even RGB or Y'CrCb 444 has already a reduced color resolution, in practical terms about 50-60%.
For those who are interested in learning the truth about the destructive nature of YCbCr, you should read this technical paper by Charles Poynton from 2004.
poynton.ca/PDFs/Merging_RGB_and_422.pdf
Here are a few bullet points:
However, even sophisticated filters can exhibit fringing on certain color edges, if conversion between R’G’B’ and 4:2:2 is repeated many times. – page 2
(actually one time is all it takes)
Loss of color detail makes it more difficult to pull bluescreen or greenscreen mattes from 4:2:2 than from R’G’B’ – page 2
Of the 16.7 million colors available in studio R’G’B’, only about 2.75 million are available in Y’CBCR. If R’G’B’ is transcoded to Y’CBCR, then transcoded back to R’G’B’, the resulting R’G’B’ cannot have any more than 2.75 million colors! – page 5,6
The bottom line is YCbCr should not be used for acquisition, period. It’s a relic from the past century of analog broadcast television. There’s really no reason to be using it in today’s digital cameras.
We have the processing power, compression technology and media speed to be saving the pictures in RGB.
I hope Panasonic will lead the charge and make this bold move. Great sales will follow!
You'd better read the article. What you said is simply not true.
Well -- they certainly would, if they had evidence that it would increase sales 10x or so. Look at the obvious -- the $60,000 VariCam 3700 is gone. The $18,000 VariCam LT obliterated it, at less than 1/3 the price. And the $7,500 EVA1 does a lot of what everyone needs, at less than half that price. They will certainly put big features in low cost cameras -- but they have to see the quantity of sales it will generate, to justify it. But just a few guys on an internet board demanding the sky on a low-cost camcorder, no, they're not going to do that.And Panasonic will not implement a RAW codec in a $2500 camera that will endanger the sales of their more expensive cameras.
+1 to all of this.
And Panasonic will not implement a RAW codec in a $2500 camera that will endanger the sales of their more expensive cameras.
Well -- As long as you buy GH2s, GH3s, GH4s, GH5s, and GH5Ss, you're validating to them that they're doing it right. When you quit buying their product, it will let them know that there's something that you demand, that they're not offering. If GH5 and GH5s sales dropped to zero overnight because Canon introduced a DPAF competitor at the same price point, then that would be a clear case of signalling to them that the customer is demanding DPAF and will not settle for less (just to use one hypothetical example).
Which is exactly why they will be kicked out from the game in a one big blow!
By the time Panasonic figures out what went wrong in their game (small compact high quality video hybrid camera suitable for all games), and while they analyze why they never became part of big game (cinema)
Unfortunately for us, the users
As long as you buy GH2s, GH3s, GH4s, GH5s, and GH5Ss, you're validating to them that they're doing it right. When you quit buying their product, it will let them know that there's something that you demand, that they're not offering.
Which is exaclty why they will be kicked out from the game in a one big blow! BANG!!! No rummors nor anouncments. just the blow.
The thing about modern manufacturing/merchants annd especialy electroncs world is that colapse happends out of blue. BOOOOOM!!!
I know people who bought s*%tload worth of equipment from CALUMET photo week before they closed all of their stores NATIONWIDE! BANG!!! just like that. Just like Samsung NX line of cameras. Just like gopro drones.
bye bye.
By the time Panasoniacs figure out what went wrong in their game (small compact high quality video hybrid camera suitable for all games), and while they analyze why they never became part of big game (cinema) and since game where they were somebody important will fall apart altogether (broadcast), it will be too late for them to do anything else but airconditions and battery chargers.
Unofrtunatly for us, the users, we will have to swallaw the pride and go back/elsewhere admitting that we wasted a decade wirh a manufacturer who had a golden hen and who's support we expected, alas, that never happened ...
Anybody trust words ofl this president shmuchk!?
Realy?
Well let me ask you something:
For how long Vesku is BEGGING for them to implent a simple info in the display? (My archive says its been 4 years in 3 different forums with one demand per month on average).
Are you saying panasoniacs have not heard him? They don't know what users realy want and demand? And what he asks is something so essential it should've been there from day 1.
Yet, they never made it happen.
Get real folks! stop believe in corporate lies!
While voting with your wallet is always effect, it's not enough on its own. On the contrary, I've often experienced a product line ceasing all together because X-company, in this case lets say Panasonic, might decide "there is no market for micro 43rds" rather than listen to the real reasons why a GHx camera underperformed.
TBH, my fear with GH5s is that it's going to underperform due to lack of IBIS and the Panasonic line will be "there was no demand for a lower resolution, higher sensitivity GHx camera". Which is bogus, but also a reasonable conclusion without vocal users petitioning and clearly communicating.
Unless we specifically petition for what we want or dislike, unintended side effects - either directly by the teams in charge, or those detached in the analytics departments calling shots purely on ROI - can occur. I've seen it with multiple product lines and pieces of software which, due to low sales, a company cuts instead of fixes.
So, vote with your wallet, but use your words. It's not always realistic or practical to boycott an entire product that may otherwise be useful yet imperfect, just to make a point so that the company can (hopefully) respond 2-3 years down the road.
I'm waiting to see if Fuji releases a cinema camera like the rumors suggest. Hope it doesn't suck if it really materializes.