Color Correction Moving Target

dvdude wrote on 5/20/2004, 7:29 AM
I did something stupid - I accidentally left my cameras in 'AUTO' when shooting indoor stuff with stage lighting. Normally, I pick a preset beforehand and check color on a monitor,

The problem is that the color temp changes depending on the shot. I haven't had chance to check real close yet but I think it's a gradual change (meaning over several frames).

I've never done color correction in Vegas before, but I get the impression that it's really aimed towards constant correction over the clip/event/project rather than a moving target kind of scenario like this.

What's the best approach to fix this?

TIA

Comments

farss wrote on 5/20/2004, 7:47 AM
You can keyframe CC as you can every other FX in Vegas. If you want it to precisely follow the shift in WB might take a bit of experimenting to get the tracking between nodes to match what was actually happening or maybe in that respect close enough will be good enough.
Basically all you need to do is find the points where the WB starts/ends its changes, correct those points and Vegas will interpolate the values between the nodes.
craftech wrote on 5/20/2004, 8:40 AM
"Auto" what? Autoexposure or Automatic white balance? I assume from your description that you mean white balance. Color correction in Vegas can fix this unless it is also combined with overexposure. I generally use the indoor white balance setting on my VX2000 rather than manual white balance. I shoot almost entirely stage productions. Split the video into sections and color correct each.

John
dvdude wrote on 5/20/2004, 9:09 AM
Evidently, you understood that I meant auto WB.
craftech wrote on 5/20/2004, 11:14 AM
Ok, then if you didn't also use autoexposure and in fact manually exposed the scenes, try my suggestion of splitting the video up into sections based upon lighting shifts and color correct each. If the final output is to be VHS, be careful of the reds, they will probably bloom if oversaturated.

John
BillyBoy wrote on 5/20/2004, 11:43 AM
While it can be time consuming the best approach to correct is break up your souce into events that have similar color hues. Then drop the color corrector filters on the EVENTS on the timeline not the track header. If necessary set keyframes to slowly ramp the effect up or down being careful that ajoining events begin/end at similar posts to avoid abrupt changes.