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Green Screen Reflection Off Model Car

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dallas kruse
Green Screen Reflection Off Model Car
on Aug 20, 2016 at 1:05:13 am

I'm shooting a plastic car for a fun tongue-in-cheek music video.

I'm going to badly composite the actors in the car flying over the city.

Problem is, the green screen backdrop is reflecting off the car hood.

I have tried moving the car about 10' away from the screen. No dice.

Are there any tricks?

I've tried spill suppression, the 50/50 trick ...

I'm going to reshoot the footage but want to try and get it right this time.

Any pointers?



Also, I'm using a stock lens. What lens would you suggest to get the entire car in focus? Or is this even possible with the car being a few inches away from the lens?

Music Producer dabbling in Video.
FCP 7. Adobe CS6.
Canon T3i.


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Dave LaRonde
Re: Green Screen Reflection Off Model Car
on Aug 20, 2016 at 2:26:09 am

Got a zoom lens? The current lens has a very short depth of field. Nice for artistic stuff, but for chroma keying when the whole object needs to be in focus? Wrong choice.

Where is the green screen? A studio? Do you need to match sun angles with the background?

If at all possible, I recommend a test shoot with a greater depth of field lens. You'll probably be able to back up, which will affect the reflection on the hood. It's tough to determine reflections and their changes from a screen shot. And for chroma keying, I NEVER recommend DSLRs. They record in a codec that's horrible for easy chroma keying. You can do it, but it's not fun. Not at all.

Maybe someone knows more about lenses than I do. For your sake I hope they chime in.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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dallas kruse
Re: Green Screen Reflection Off Model Car
on Aug 20, 2016 at 2:30:14 am

This is an 18-75mm lens.

In regards to matching Sun ... we're not worries about that since this is going to be a stylized show (in outer space).

I'll look at some other lenses online but since I only have 2 lenses ... I'll have to try and make something work.

Music Producer dabbling in Video.
FCP 7. Adobe CS6.
Canon T3i.


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Dave LaRonde
Re: Green Screen Reflection Off Model Car
on Aug 20, 2016 at 2:41:11 am

Sorry to hear your predicament. The key to getting a useful lens for you is to find one with a very wide, or deep, depth of field. I hope you find success.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Greg Gesch
Re: Green Screen Reflection Off Model Car
on Aug 20, 2016 at 3:26:16 am

Hi. It really depends on how tacky you are happy to have it look. You might get the model in focus away from the camera and lit properly without a green screen, shoot a high res still and then mask out the background. You could perhaps shoot a couple of different angles to cut away to? Depends on the look you are going for.


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dallas kruse
Re: Green Screen Reflection Off Model Car
on Aug 20, 2016 at 3:45:21 am

Tacky is actually what we're going for. Its going to be SUPER lo-budget "LOOKING".

I don't know why I didn't think of shooting a still and then using that!!!!

Music Producer dabbling in Video.
FCP 7. Adobe CS6.
Canon T3i.


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jerry wise
Re: Green Screen Reflection Off Model Car
on Aug 20, 2016 at 5:24:03 pm



i got a pretty good key from your pic using Hawaiki Keyer.


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Spencer Tweed
Re: Green Screen Reflection Off Model Car
on Aug 21, 2016 at 4:23:18 am

You can probably use some black flags to block out the green screen from the reflections. You only need a small patch of green to cover what the camera is seeing, probably a bunch of this spill can be cut down with flags just outside the frame.

Stills is also a great idea!

- Spencer


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Kalle Kannisto
Re: Green Screen Reflection Off Model Car
on Aug 22, 2016 at 7:56:44 am

A blue screen might be better, the reflections should be blue anyways, so you don't need to try and key them out or color correct them. Then again, if the camera doesn't move, stills or manual masking works just as good.

Kalleheikki Kannisto
Senior Graphic Designer


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dallas kruse
Re: Green Screen Reflection Off Model Car
on Aug 22, 2016 at 2:31:04 pm

After some working the frame ... I found that a black piece of cloth above the green screen and on the sides helped tremendously.

I truly didn't need the green screen if I were taking a still but in the end, all the info is super helpful.

Music Producer dabbling in Video.
FCP 7. Adobe CS6.
Canon T3i.


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