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Hmmm... I just ran my DNG sequences through photoshop instead of after effects and the same phenomenon is occurring. I'm surprised that you're getting different results when using AE vs Photoshop, given that they both use the exact same Camera RAW algorithm.

Anyone else noticing this problem?

After some testing, it seems like the luma/color shifting problem in ACR can be caused by modifying nearly any of the settings sliders.

Here's a particularly bad example (watch the luma of the building in the background):
https://docs.google.com/file/d/0B1keq-qyTGDNT21mR0hmWVFFc2s/edit?usp=sharing

I've opened up a separate thread to continue the discussion about the issue here:
http://www.magiclantern.fm/forum/index.php?topic=5710.0

When processing DNGs from ML RAW video using Adobe Camera RAW (in either AE, Photoshop, or LR) the color/luma of the resulting footage shifts when the objects in the scene change. I'm a little surprised I haven't come across any discussion of this yet given how much of an issue it's been for me and how much I've noticed it in others' footage.

This can be seen subtly at 1:20 here (the luma of the water changes when the dark subjects cross the foreground): https://vimeo.com/66480704

Here's a shot where it's especially noticeable (watch the luma of the building in the background): https://docs.google.com/file/d/0B1keq-qyTGDNT21mR0hmWVFFc2s/edit?usp=sharing

This issue only occurs if you change the Camera RAW settings sliders (Clarity, Highlights, Vibrance, etc.) from their default/neutral states. It therefore seems like Camera RAW uses the color/luma values of the ENTIRE image to determine how to apply the demosaicing algorithm to any given pixel. In other words - the settings sliders aren't absolute controls, but rather they adapt based on the average color/luma of the frame. This phenomenon/method obviously wouldn't be an issue when processing still photos because the average color/luma of the frame doesn't change. But with video, it does.

Has anyone found a method to overcome this?

Correct. It's definitely this type of problem that causes the color shifting. So far, I've tested auto-white-balance and clarity and they both dramatically cause the color shifting - meaning that their effect on the image is dependent on the content of the image (in other words, a pixel with the exact same color value in different areas of the image will be color-shifted in different ways, depending on the other pixels around it). This is the problem we need to avoid. I'm testing the other settings...

I think I've figured it out. I took a shot with a particularly bad instance of color-shifting problems and processed the DNG files with all of the settings sliders set to neutral in Camera RAW and there was no color-shifting. So, I think the root of the problem is how the settings sliders in Camera RAW (like Clarity, Highlights and Shadows) dynamically adjust how they affect an image based on the content of the image. This isn't a problem when it comes to editing still images because the content of the image isn't changing - but with video, it is. I'm going to experiment a little more and see if it's maybe just one of the settings sliders that acts this way...

Huge thanks, Noisyboy! Everything has worked perfectly. You're a champion.

I've been using marten's RAWanizer to strip out the DNGs and it makes batch-processing many shots much easier:
http://www.magiclantern.fm/forum/index.php?topic=5557.0

I'm noticing a couple things about the resulting footage:

• - The moire and aliasing problems the 6D is notorious for are unfortunately substantially worse. Example: http://i.imgur.com/IN3HhgQ.jpg As a result of this, chromatic aberration also seems to be especially more noticeable
• - The DNGs are about 1-1.5 stops darker than the viewfinder would suggest when you're recording. Thus, you have to boost the exposure in your RAW processor, which can introduce a lot of noise.
• - And, I'm surprised I haven't seen much talk about this problem, but there are sudden color shifts that occur when objects enter/leave the frame in the scene (almost like somewhere there is an auto-lighting-corrector running). This problem has caused most of my shots to be unusable. You can see a subtle example of it at 1:20 here when the people walk in front of the lens (watch the color of the sky): https://vimeo.com/66480704

Anyone know of something to fix that last problem - is there a discussion going on about it somewhere that I'm missing?