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What to do to eliminate Flickering luma levels

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Soose Triolo
What to do to eliminate Flickering luma levels
on Apr 15, 2011 at 7:46:06 pm

I've got some footage shot late evening with a shift tilt lens and is time lapsed. The problem is that the luminance levels in the sky flicker and it's distracting. Does anyone have thoughts on how to eliminate or at least minimize the flickering?

Soose


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Walter Soyka
Re: What to do to eliminate Flickering luma levels
on Apr 15, 2011 at 7:54:09 pm

The Color Stabilizer effect [link] can be used to reduce flicker in timelapse photography.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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Dave LaRonde
Re: What to do to eliminate Flickering luma levels
on Apr 15, 2011 at 7:58:26 pm

The obvious way is to turn off the automatic iris and reshoot the footage. If you can't do that, you can try the Color Stabilizer effect. If the brightness variations aren't too severe, it might work for you.

There's a good summary on using the effect here:
http://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c11...

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Soose Triolo
Re: What to do to eliminate Flickering luma levels
on Apr 15, 2011 at 8:32:51 pm

Brilliant. This is not an effect I had used before. Thanks!

Soose


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Dave LaRonde
Re: What to do to eliminate Flickering luma levels
on Apr 15, 2011 at 8:42:09 pm

If you would, please let us know if it works.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Soose Triolo
Re: What to do to eliminate Flickering luma levels
on Apr 19, 2011 at 1:34:07 pm

Color Stabilizer worked well for the evening footage, combined with Echo on areas that had no movement, On another clip, shot same Shift Tilt in daylight, time lapse, with moving objects and shadows, it's proving to a bit more complicated. I still have hope, but am going to spend some time tweaking the effect, finding the right white and black points. Any other suggestions are welcomed.

Soose


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Walter Soyka
Re: What to do to eliminate Flickering luma levels
on Apr 19, 2011 at 2:43:59 pm

[Soose Triolo] "On another clip, shot same Shift Tilt in daylight, time lapse, with moving objects and shadows, it's proving to a bit more complicated. I still have hope, but am going to spend some time tweaking the effect, finding the right white and black points."

You might get better results splitting the layer around some of the moving objects and shadows, so that you can pick a black and white point for a smaller range of frames at a time, instead of trying to find a single point that's good across the entire clip.


[Soose Triolo] "Any other suggestions are welcomed."

You could try the Auto levels effect [link].

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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