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Chip Chart Color Correction in FCP7

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Greg Ondera
Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 5:00:08 pm

My Sony PMW EX1 has a broken LCD, it's full of odd coloration, and in a run and gun situation, outdoors, I white balanced and shot a quick chip chart that I often use and went ahead and shot the funeral I was at for a friend. Well, I wasn't white balanced at all and the shot is so green you'd think the green giant was spraying the scene. Lucky I shoot the Chip Chart.

Does anyone know of a good tutorial or video for color correcting off of a chip chart in FCP7? I do basic 3-way at times, but I need to really work on this one. Thanks for any advice.

Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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Jeremy Garchow
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 5:06:15 pm

Is it just a blown white balance?

If so, use the 3 way CC, select the highlight eye dropper, then choose white on the chart.

Select the midtone dropper and choose grey.

Select the shadows dropper and choose black from the chart.

Should get you in the ballpark.


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Greg Ondera
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 5:19:07 pm

Thanks! I go through that routine every so often, but this is different. It doesn't respond to that to my surprise. I'm wondering if the LCD screen was something internal that triggered in the camera. Everything looks super green and washed out. I do have an old Color Correction for FCP DVD by DigitalFilm Tree, but I'm wondering if there is something more up to date. I'm hoping I'm not having camera trouble, but I'm going to test it out now.

So would you happen to know of any updated comprehensive sources for color correction off of a chip chart?

Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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Jeremy Garchow
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 5:21:53 pm

Any chance you can post a couple full res frames of the chart?

A chart corresponds to a waveform for luma and a vectorscope for chroma.

You would have to look at the vectorscope and adjust the color so that the colors line up with the targets.


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Greg Ondera
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 5:31:29 pm

Yeah, here it is. Thanks for looking at this. I'm getting a sinking feeling about this the more I look at it.

Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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Greg Ondera
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 5:32:38 pm

I'll try this.

Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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Greg Ondera
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 5:37:48 pm

Yeah, here it is. Thanks for looking at this. I'm getting a sinking feeling about this the more I look at it.


Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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Jeremy Garchow
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 6:38:03 pm

Wow. There is no Red.

Did you have any filters on?


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Paolo Esposito
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 7:03:12 pm

Im no expert here But I think color balance works by doing exactly that, balancing the signals from the different channels depending on the color space you are working (RGB 8bit or 10 bit 422?).

Have you looked at the image through scopes in FCP? Is there info in the Red channel? The JPG has info but it may very well be because you exported it to a different color space it might have made that info up? I don't know... but I would guess that if the RED CCD is busted and info is not there, there's no way to fix it because you just don't have the info to balance.

It might make good black and white footage though. It does have all the luminance info...

Look at the image though scopes and see if you can discover something. Those are my 2cents


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Jeremy Garchow
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 7:27:57 pm

Sorry, I should have said little red, not "no red". My linguistic error!

Yes, it would be better if you could export a few frames in a video codec (like 2 frames of ProRes in a .mov). There's Red, but it's all the bottom. The lanyard is reddish.

Jeremy


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Greg Ondera
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 8:25:30 pm

I just checked the camera and it looked like correct color when I white balanced. Hmm, I wonder what is going on?

Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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Paolo Esposito
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 8:44:42 pm

How did you record the media? If recorded externally, let's say on a recorder through SDI or HDMI trouble shoot there, try testing media recorded straight on the camera. If recoded internally try a feed like SDI or HDMI. Usually those signals are straight from the chip and bypass any signal prossesing. You may be able to see a beautiful image on an external monitor and being recoding something different. I once was using a recorder through component and had a channel switched but the monitor compensated somehow and recorded something different than what was on the monitor.

Have you used the camera ever since? did it work fine or does the problem remain?

The more info the more likely you are to figure out what went wrong and maybe, just maybe recover the footage... well the color to the footage =)


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Joe Barta IV
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 7:28:47 pm

I'm afraid Jeremy is right, you've lost the Red channel from your camera. Time to repair or shop.

Bars & Tone
SALUTE!


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Rafael Amador
Re: Chip Chart Color Correction in FCP7
on Oct 5, 2011 at 11:48:41 pm

I'm sorry to agree.
That's not a wrong WB but a full channel gone.
rafael

http://www.nagavideo.com


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Greg Ondera
Re: Chip Chart Color Correction in FCP7
on Oct 6, 2011 at 1:10:11 am

I'm afraid you guys are right. So that means there is nothing I can do? And how could that have happened just by starting it up again? The camera seems to be working now. Does anyone have any idea about avoiding this in the future?

Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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Seth Marshall
Re: Chip Chart Color Correction in FCP7
on Oct 28, 2011 at 7:12:42 pm

I'm a little late to this but really feel for you. If all else has failed I would try to save it by seeing if B&W is any better


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Greg Ondera
Re: Chip Chart Color Correction in FCP7
on Oct 28, 2011 at 11:23:57 pm

Good idea. It was a funeral, after all. But luckily I was doing it for free, although it is disconcerting and scary in the future. I went forth and got the LCD screen fixed and that cost $432 for a cable swap compared to what Sony wanted to charge at $1,200.00.

Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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Rafael Amador
Re: Chip Chart Color Correction in FCP7
on Oct 29, 2011 at 3:15:17 am

What is weird is that the LCD affected the recording.
rafael

http://www.nagavideo.com


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Greg Ondera
Re: Chip Chart Color Correction in FCP7
on Oct 29, 2011 at 5:06:40 am

I don't think it did. At least I can't see how the LCD could alter color in the recording. The guy who repaired it thought it was a white balance anomaly. It was too radical in my mind to be just an anomaly so I may loose sleep over the possibility of it happening again. But since I couldn't trust the screen, I didn't know the WB was off. I should have looked in the eyepiece.

Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org


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