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Terrible hot spot on green screen! Need some help.

Posted: Wed, 30th Mar 2011, 1:52am

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Josh3B

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Shooting a comedy bit that required some star wars stuff, and we got it shot, but when I captured it and went to remove the green screen, there is an incredible hot spot near the bottom, and I'm wondering if anyone on here has some good advice on getting rid of it. It seems to affect the ability to get rid of any of the green background.

This is what it looks like at the beginning of the shot, with just R2.


And here is what the shot looks like with everyone in the shot.


Hope someone can give me some help!

JB
Posted: Wed, 30th Mar 2011, 8:29am

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Simon K Jones

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The large hotspot isn't the only problem here, unfortunately. The screen in general is very unevenly lit, with lots of changing tones and shadows and creases. Around the centre it is much darker than at the edges. It's also not particularly close to a strong chroma green, instead looking more olive-green.

There also appaears to be a lot of grain, due to the low levels of light, and I'm guessing this is at DV resolution, so I'm afraid you've got your work cut out for you here.

Is reshooting a possibility at all?
Posted: Wed, 30th Mar 2011, 3:18pm

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Axeman

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Take advantage of the Zebra Stripes on your camera, if it has that option, while filming to prevent filming overexposed areas like that.
Posted: Wed, 30th Mar 2011, 7:29pm

Post 4 of 4

Josh3B

Force: 400 | Joined: 6th Aug 2006 | Posts: 58

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I think our main issue was... err... sloth.

We kind of hurried along on some of that green screen stuff, and here- of course, is the result. The screen itself actually isn't well represented there in those pics- its a good green. The other segments we shot that night came out fine.

Not to worry- seems like re-shooting is a possibility.



JB