Avoid blue?

S

someday

Well-known member
I did some tests and i noticed that if the white balance tends to blue the noise is huge and very disturbing, instead if the white balance tends to green, the noise is way less.

So my question is: why don't shoot with a green dominance to avoid noise and cc afterwards?


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I'm also having huge noise problems with my new HVX. I'd like to try your method also. How do you adjust the white balance so that it tends to green?
cheers,
Tom
 
Uhhhhh, no. Red sux. If you look at any bright reds, you'll see major aliasing. I think toning down red should help.
 
Here's how I got trough this noise problem (specially the blueish noise):

1- Use Cinegamma V for night scenes, or underexposed scenes with much dark areas.

2- Detail coring +2

3- Avoid Cinegamma D if the scene is very low in light.

4- B press gama is also good for Low Light night scenes, but the image loses much of the "cine" attributes. (Not in therms of saturation or color, but in therms of overal image analysis. Saveable in post? I don't know).

5- Avoid ANY gain.

6- Light the scene in a way that you can keep the camera iris at 2.8 or above. (4 to 5 ideal). Lot less blueish noise and image much sharper.

This is, of course, based on my own experience. That's how I achieve my best results.
 
doccutter said:
Uhhhhh, no. Red sux. If you look at any bright reds, you'll see major aliasing. I think toning down red should help.
Click to expand...


Maybe i was not clear. As you set the white balance pointing to a reddish paper (not deep red, just a white-red color) the camera will have a green dominant.
Today i made more settings and now i can say that the noise is very low, the color is gorgeous (even red) and the overall image is perfect.
Here the settings:


Operation mode: FILM CAM

Detail Level: -3
V Detail Level: 0
Detail Coring: +7
Chroma Level: -5
Chroma Phase 0
Color Temp: 0
Master Pedal: -4
Gamma: B.Press
Knee: Auto (this should be changed depending on highlight situation)
Matrix Norm2
Skin Tone: OFF





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I dont think I've ever run into this problem... I use a white t-shirt, a white or lt Grey wall... I have a set from warmcards, and they rarely come out of the box.. If it looks great on my Marshall, I'm happy... Never had a complaint from a client..

I'd love to see all this noise you all are talking about..
 
If you see HVX footage in an HD- CRT, like the JVC DTV's, the picture is fine. However, nowadays LCD tv's still boast a very low contrast ratio, and that translates to poor picture. Also, most people view HVX footage on their HD tv sets with the profile set to "Dinamic". This brings a much poorer picture of HVX footage. In "standard", it looks a lot better.
 
Someday, you have a fascinating theory. I hope we can see where this goes. Yes, why couldn't one balance the camera toward a certain value that minimizes noise and then dial back in the opposite direction in color correction?

What are the limitations of this approach?

Why wouldn't this work perfectly in fact? If you can take a scene and dial it back and forth while doing color correction with no loss of information, just a shift of all the colors, why couldn't you co-ordinate some settings in the camera and in the color correction software and do the same thing?

Someday Someday will be recognized as a cinema pioneer.
 
hahahah funny.
What you'r saying is important. I read somewhere here in the forum that the less the deviation from the standard WB the less math is involved.
Maybe the best is to always shoot with preset settings and control the lights instead + CC at 4:4:4
 
Let's say your method holds up. One compromise I can see is that now all the footage for a given project needs to be CC'd just to edit. Lots of rendering and extra files.

But then again this method, should it prove successful, could just be used in low light situations which bring out the noise.
 
My guess is that if there is noise in the blue part of the picture you will bring that back in color correction, and that if it is darker because you underexposed it the first time, it will bring more noise with it in correction. Just a guess. Generally best to go for the perfect balance when you can. But I'm no post expert.

Lenny Levy
 
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