Basic Video Production: Video Production Basics: The waveform monitorof rudi - 28 Jan 2010 06:55:00
Antwort von domain:
What I'm still not clear is the following: An analysis of a test chart, the http://www.belle-nuit.com/testchart.html example in waveform monitor, then the field 255 is actually at exactly 100%. On the other hand revealed some images of my camcorders in areas outshone white values that are clearly beyond the 100% line, see above, therefore, stop (here are 120%) of the monitor display. I believe that these bodies at the 8-bit encoding only the value of 255 may have. Clicking on liquid in the primary color correction then the CCIR 601-Option s.erfolgt actually a rendering process and the previously very "white" image areas will be brought down to 100%, the more likely value of 235 corresponds to the broadcast-ready and a little less brilliant effect.
Why then is the lightest in the test field BelleNuit test chart with 255 labeled?
That being said, I think that we as an amateur, who may make his videos do not necessarily have broadcast quality should easily reach the 120% line in order to exploit the full dynamic range of camcorder synonymous in the play. One must not overlook the fact that it is synonymous in small areas normally exposed images often overexposed areas, such as sunlight, reflections on the water, etc. These can and should calm in the picture with her, he found the original 255-values.
It can be formulated as synonymous: the waveform monitor is not important for amateurs MUs. What matters is what the camcorder and delivering the optical visual inspection. If it is then in the picture but there are too many Superweißstellen, you can save anything anyway. They can be high even darken gray on a light uniformly covered by a reduction of gain in the NLE.
Antwort von tommyb:
That being said, I think that we as an amateur, who may make his videos do not necessarily have broadcast quality should easily reach the 120% line in order to exploit the full dynamic range of camcorder synonymous in the play.
The problem is then the playback device on which one it is happening.
When I rausspiele my movies with the full dynamics (eg on DVD) and then they look at me on the TV, the DVD player with the highest probability of the value of 235 as maximum and watch everything that is about to overpower. Ie I'm not drawing more in the area of 235th Details will also be under 16 to TV black.
I slide the DVD is now in the calculator, then it may well be that the software player is behaving exactly - the 16-235 for the computer monitor, but then stretches out to 0-255. Whether that is made so we can rule. well s.einem Histogram see if this has gaps.
But it may well be synonymous, that the software player and used the 16-235 completely ignored as a security precaution 0-255. Then 16-235 just does not look like high-contrast, but no details 0-255 lost in the bright or dark area.
For the amateur 0-255 or 16-235 may be totally not care but if it is carefully considered, it is very important to pay attention to.
Antwort von domain:
You have absolutely right But in the amateur practice would mean that virtually any footage to be 120% and at least one should check that comes in the highlights not so rare to correct them if necessary. Do not make me personally. Just as the material arrives, it is synonymous berarbeitet next, although I myself have sometimes synonymous in the look-waveform monitor.