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white balance fluctuating
Hi,
I was on a shoot by myself one day and I shot some interviews. One came out weird. I white balanced, but I didn’t notice until post that it was changing from being white balanced properly to being too warm. I know how to key frame the Color Corrector 3 way, but the keyframing is weird. The indicator on the color wheel wants to go around the color wheel instead of going right to blue.
How can I make it go strait across the color wheel rather than around it when it follows the keyframes? I know you can do this in Color, but I don’t have much experience with color and the deadline for this video is right around the corner.
Thanks for any help!
ps. the camera was a Sony PD170. Has anyone else ever had this problem?
Robert J. Grauert, Jr.
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9 Replies
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[Rob Grauert] “but the keyframing is weird. The indicator on the color wheel wants to go around the color wheel instead of going right to blue. “
You need to force the cursor passing by the center setting a key-frame there.
The trajectory of the cursor will be lineal, ie. Red-White-Blue, insted of circular Red-Magenta-Blue.
Rafael -
And the PD170 has a Color LCD. I would have at least checked it while shooting.
Steve Eisen
Eisen Video Productions
Board of Directors
Chicago Final Cut Pro Users Group -
Instead of putting an extra keyframe halfway through the travel path, you can just split the clip and make a cross-fade transition. No keyframes.
I’m assuming you did lock the white balance on the PD170… What kind of lighting were you shooting with? Any fluorescents in the mix? Shooting outside? I’ve noticed that the color temp of fluorescent light on video can drift over time. And if you were at the mercy of the sun, the color temp of the light hitting your subject can change as the sun/clouds/trees move and change how light bounces around.
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When shooting outdoors, even If you adjust nothing else ALWAYS first white balance with a standard card, then you have a hope of fixing hue problems in post.
Cheers
Alexander -
I have experienced this when using a shutter while shooting under flourescents. The frequency of the shutter oscilates and the camera WB drifts. Next time, turn off the shutter or the flourescents.
Dual 3Gb Mac Pro Intel 8 Core, 5GB RAM, OS 10.4.11, QT 7.3, FCP2 6.0.2, CS3, AJA ioHD
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Would it be easier to split the clip, white balance each side, and cross dissolve between?
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My DVX 100 does this under flourescents, it’s a pain in the ass, and unfortunately in many situations like classrooms I cant get enough time or it’s too disturbing to light it properly. Really sucks.
On a school job last year I sold the client on going with a highly desaturated look, because it was next to impossible to keyframe the color corrector to fix it.
Have a wonderful day.
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“And the PD170 has a Color LCD. I would have at least checked it while shooting.”
You’re right, I should have checked and it was a stupid mistake on my part. I just never encountered this before. I didn’t know this happened under florescent lighting.
Now I know for the future, but I’m not psyched that I had to learn this lesson the hard way.
Thanks for the tips guys.
Robert J. Grauert, Jr.
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But at least you learned it. A lot of learning does come from mistakes. Just don’t make the same mistake twice. if you have time, try being creative with the FCP filters.
Steve Eisen
Eisen Video Productions
Board of Directors
Chicago Final Cut Pro Users Group
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