Help with Over Exposure!

jrazz wrote on 3/22/2009, 9:18 PM
So, we filmed 7 sessions and the first session a breaker tripped and 2 of the lights went out and when I turned back on the camera that was on the same circuit, the gain was not set correctly- I didn't check it, just pushed record and then back to my other cam.

I wanted to see if any of you would mind lending a hand to see what settings I would need to use (fx chain) to get this to look as close to possible as the other two cams.

Over-exposed:

Base image:


Thanks for the help all.

j razz

Comments

musicvid10 wrote on 3/22/2009, 10:22 PM
That's a tough one. Doubt you'll get a good match, but start in Color Corrector by dropping the gamma down to something ridiculous like 0.1 and adjusting the saturation, gain and offset parameters from there. Someone else may have a better idea.
JackW wrote on 3/22/2009, 11:21 PM
I'd start with Levels to pull down the blacks and highlights, then follow up as suggested above.

Jack
Serena wrote on 3/23/2009, 12:12 AM
Unfortunately clipping makes it impossible to fully correct, but curves then levels can bring it into something usable. At least can match the curtains and the trousers! The shirt highlights are burnt and skin detail is clipped, so I think they're beyond recovery (in terms of a good match).
jrazz wrote on 3/26/2009, 7:14 AM
Thanks all for the advice. I am going to get back to work on this on Saturday (been out of pocket since posting). I will post a grab of the results.

Again, the suggestions are much appreciated. Good thing I only have one session that suffers from this :)

j razz
malowz wrote on 3/29/2009, 3:02 AM
try this:

put 3 filters, a "Invert" (at 100%), "Color Corrector", "Invert" (at 100%).

then, lift up the gamma of the color corrector in the middle.

this darkens highlights first, in the logarithmic fashion, more like a "iris closing" way.

you can also put a color corrector secondary to select reds and lower the gamma a bit.

the best i get is this:

http://i41.tinypic.com/2h2ifeq.jpg
Dreamline wrote on 3/29/2009, 6:57 PM
Malowz, that's genius.
jrazz wrote on 3/29/2009, 7:16 PM
That does look really good.

I followed Serena's advice above and got a decent result but wound up not having to use it as I had two other cams with good shots and the only place I would have needed it was where I placed an introductory graphic.

Great tip though and great result!

j razz
Grazie wrote on 3/29/2009, 10:56 PM
Malowz, that's genius. Ditto!! - I am well impressed.

Grazie
Robert W wrote on 3/30/2009, 3:52 AM
I wish I had had that tip 18 months ago! Been trying to work out a way to that for aaageess!
Tom Pauncz wrote on 3/30/2009, 5:32 AM
Brilliant tip!
I am always in awe of people who come up with these amazing tips. How do you figure them out??
Thanks malowz...
Tom
malowz wrote on 3/30/2009, 12:22 PM
well, aim kind o "obsessed" with technical aspect of everything, so, i spend a lot of time "figuring things out" .

one week was the "how to match videos", "how to bright and dark videos like cameras do", etc...

after discover the cameras do "bright" in logarithmic (a.k.a., not linear) was obvious that to simulate this i have to do the same.

as vegas only have "lower gamma" (bright dark's first) i was stuck.

days later, "magically" the idea popped out. "if i invert, i will work"

and there it was.

also remember, dark or bright may also have to add or remove a bit of saturation on the color corrector filter. ;)
Tom Pauncz wrote on 3/30/2009, 1:53 PM
malowz,
So, if I can ask, do you have any tips on "how to match videos"? Such as two camera shoots where the colours don't quite match due to different cameras.
I am curious...
Tom
farss wrote on 3/30/2009, 2:46 PM
You can achieve the same outcome using the Color Curves.

What has happened in the camera is the R,G,B channels all clipped resulting in the face being white. You can use the CCs to pull back the blue and green channels in the highlights to sort of reduce the visual impact of this. In this case thankfully they didn't clip too hard so it is possible to get some color back without hideous results.

Curves give very fine image control, the downside to using curves is they're very fiddly to work with.

Bob.
Márcio Nascimento Brazil wrote on 5/3/2009, 7:50 PM
Hi, if you have the vegas Pro you can do something like this:
1. duplicate the track
2. in the compositing mode of the duplicated track (above) changes to "Multiply (Mask)". It will burn all the image.
4. Add "Levels" effect to one of the two layer as you like and chande "output start/end or gamma" to correct.
VanLazarus wrote on 12/1/2010, 11:35 PM
Thanks Malowz! Brilliant!

You saved me on some overexposed video!
VanLazarus wrote on 12/1/2010, 11:52 PM
Thanks as well Mario. Tried your method too... Although I think Malowz's method preserved the colors more accurately.