Welcome to our community

Be a part of something great, join today!

Register Log in
  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

What 're test signals for ?

R

REDHKSC

Well-known member
Joined
Jan 2, 2007
Messages
491
Reaction score
0
Points
0
Age
60
Website
redhksc.hi5.com
In SD or HD Camera we can record Color Bars and 1K reference tone on tape.

May I ask why I can not record them in 4K REDCODE ?

STEW.
HKG - CHINA
 
They're for calibrating monitors on set... at least as of today. I can't think of another use for them as of build 15. You can't record them because there's nothing "fixed" at the time of shooting... which means that the bars would ultimately be useless if recorded.
 
Most likely because there would be no need for calibration when transcoding from Raw data. You can set your white balance and color balance after the fact without affecting your original data.

Also, whatever your metadata settings were on a clip-by-clip basis are carried over into the post apps.
 
Stew,

It's a good idea to shoot a color chart on every set-up. This clip can then become the baseline for color correction for that scene or you can refer back to it if there is a problem.

As Brook mentioned the in camera bars are for monitor calibration.

David
 
REDHKSC said:
In SD or HD Camera we can record Color Bars and 1K reference tone on tape.

May I ask why I can not record them in 4K REDCODE ?

STEW.
HKG - CHINA
Click to expand...

Because 75% and 100% bars are tools used strictly for video-based calibration within the realm of CCIR-601 and REC709. They have no real meaning or bearing with a RAW world.

That's also why there are no bars in a film shoot, and everybody uses Macbeth, "Marcie," Chroma du Monde, etc.

In a video-based shoot, your absolute white and black points are already established because of the known color parameters of the working space. So, they are already established inside the camera. But in a RAW workflow (as in film,) "white," and "black" are fairly relative terms and are judged by environmental parameters outside the camera.

Hence - bars generated inside a video camera are the correct reference tool for video. And charts shot through the lens with appropriate environmental lighting are the correct reference point for a film and/or RAW workflow.

Best,

Lucas
-----
ASSIMILATE, inc.
LA, CA, USA
 
You must log in or register to reply here.
Back
Top