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You don’t need a Davio and you don’t need an HD link – perfect REC 709 with just a consumer plasma
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SO we have two possibilities;
A) We cannot tell the difference, so why bother with 10 bit monitoring expense
B) We can tell the difference, so 10 bit is dangerous if 8 bit is our deliverable,
Either way, one could conclude that 8 bit monitoring is a great choice.
My feeling is, people think 8 bit is not good enough for monitoring because they have been exposed to crappy 8 bit monitors that in fact do not display the full 0-255 RGB 8 bit range. A great 8 bit monitor truly capable of full Rec 709 and well calibrated will show no banding or other deficiencies – it will simply be a great monitor. (In other words I in fact agree with the above poster but if there ever WERE some difference, then “B” applies and 8 bit is still a better choice.)
Please lets’ be clear here though – colorspace should be as high as possible until output to monitor, and if using a lut box, then you must use at least a 10 bit signal (more would be better) until that box otherwise your LUT box is “grading” low colorspace material, which can result in banding or other issues.
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With 8bit you can’t know if banding is from grading or from monitor or lut or calibration or… I think you need to monitor as better as you can, and in the end mastering down to 8bit, pal, web, etc…
In the other hand, i1 display cant do <1 dE across de board. Only a spectometre can do that… Or expensive colorimeters with recalibration over time.
The basic problem is that colorimeter has an internal table that maybe is not accurate enought for dE1… If you want a real dE <3 across the board you need at least eyeonepro… -
The current i1 Display Pro actually beats the old EyeOnePro in accuracy (you can look it up). These things are progressing. It stands to reason – a $3000 dollar 2011 DSLR beats an $8000 DSLR from 6 years ago.
I am extremely sensitive to color shift and I can actually see an E Delta of more than 1.5 or so on a grayscale screen. I can’t see any problems after calibration with our i1 Display.
Again, Banding does not come from a good 8 bit monitor. 8 bit does not generate banding – 8 bit is enough color to show any image ever recorded on this planet without banding – it’s that many monitors are crap regardless of whatever bit-rate they claim to be (most TFT panels are only 6 bit – did you know that?) , and that many monitors are not properly calibrated, or are simply impossible to calibrate without a LUT system like from Lightspace.
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The actual eyeonepro is not the same than 6 years ago, there are different revision. The only problem of eyeonepro is the slow read and low light, but not accuracy.
For a greyscale accuracy you don’t need too much… the problem is with colors and gamut.
At least me I can see a lot difference when I set output of davinci sdi at 8 bit or 10 bit, don’t you?. I can see the difference in my plasma, crt, and lcd. What I’m doing wrong?
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If you see a difference between 8 bit and 10 bit, then there are several possibilities:
1 – You are using a LUT box. A LUT box “grades” a video stream with a correction. Much like any kind of grading, when below 12, or even 16 bit, you will see a quality difference in the output. 8 bit only looks the same if the signal is untouched. 8 bit is a more than adequate **final** delivery format, not a working format in any way.
2 – There is indeed a visible difference between 8 bit and 10 bit display colorspace. This is debatable. Experts say no. Either way, if you are delivering to 8 bit you should look at that while working. What next? Grading in P3 space for Rec 709 delivery? I mean, p3 is better, and a gentleman above said that he wants the monitor to be “as good as it can”. I say, why look at what your audience will not see.
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[Jose Lomeña] “With 2 monitors, you can use Lut from decklink preference panel for hdmi out… and don’t use resolve lut. And the other SDI out to any Calibrated monitor, or a hdlink.”
Sorry but where in the preference panel of my Extreme card can I apply a Lut just on the hdmi?
Maybe I overlooked it, but I can’t find it…Any help would be greatly appreciated
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No, you bring in the LUT within Davinci. Just look up “display lut” in the manual, which has a whole section on LUTs. Display Luts affect only display, not the grade itself. Other lut applications do affect the grade, but not Display. The same 3D LUT file format can have many uses, and display calibration is only one of them.
In essence, you are using a display LUT to grade-away incorrect biases within your particular monitor.
Many other software do not have the ability to load display luts. In this way a box like HD link would be preferable, as it could be in the chain of any output type to your monitor, even blu-ray players.
Most outputs are fully compliant in the digital world, so accounting for differences on the output side is not really necessary, it is the displays that tend to be heavily inaccurate and in dire need of correction.
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[Robert Ruffo] “You can use an Intensity Pro card – since you won’t be bending the signal”
But the Intensity color space output is YUV 422, not REC709.
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BTW, interesting thread that must have pissed a lot of people 😉
I just didn’t get how you were able to make this work with an Intensity not being rec709. -
Just a quick question here: if you grade in P3 for viewing on an ~R709 display, how do you convert the graded imagery? Do you use standard CIE 3×3 matrices via an XYZ intermediary, or do you show the graded P3 content directly on the R709 display? In the latter case, the content will come out desaturated. Thanks.
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