Chroma Key Experts? at

Go Back   DV Info Net > Cross-Platform Post Production Solutions > Digital Compositing and Effects

Digital Compositing and Effects
After Effects, Shake and everything else.

Thread Tools Search this Thread
Old March 6th, 2009, 10:55 PM   #1
Regular Crew
Join Date: Jan 2009
Location: Phoenix AZ
Posts: 31
Chroma Key Experts?


I have a question about the Chroma Key set-up.
I want to build a set that looks like a picture window in an office building . Easy right?... My question is can I do it with a 90* corner in it? If you can imagine it would look like a big glass corner in a high rise building. Will this work? Or will the image distort or look obviously fake when it makes the bend?

I hope I explained it right.

Thanks in advance.
Michael Cox is offline   Reply With Quote
Old March 9th, 2009, 09:32 AM   #2
Regular Crew
Join Date: Aug 2007
Location: Jacksonville, Illinois
Posts: 130
You shouldn't have a problem with the background image bending unless you're trying to create a background using two separate images. I personally think your greatest challenge will be replicating the daylight cast through the window, then again I'm not a pro at compositing.
John C. Plunkett is offline   Reply With Quote
Old March 9th, 2009, 02:19 PM   #3
Regular Crew
Join Date: Feb 2009
Location: SF Bay Area, CA, USA
Posts: 78
Seems like you should position yourself in a similar place and shoot some reference shots to get an idea what your background plates should look like for the composite; this will determine your needs for a background element and how it will need to look. If it's a corner building then if it's in a city, the buildings on the other side of the intersection may be far enough away that your background plate can just be flat, ditto if you'll just be compositing a sky in there. Just get some parallax going if you move your camera and it can look fairly realistic. If I were using After Effects or Nuke, I'd set that layer up in 3D for much easier parallax. If your camera won't be moving, all the easier.

It also depends how much your camera will move and how you block your shots. You'll probably also need to double up on your lights so each part of the right-angle greenscreen is lit as evenly as possible...OR, if you can make it big enough, just make a big flat greenscreen and put it far enough away from your set that it won't need to bend, but there again you'll need to increase your light sources. You could REALLY go guerilla and block your shots so you only look out of some of the windows all of the time, but your shooting plan may not allow for this.
Nathan Moody is offline   Reply With Quote
Old March 10th, 2009, 12:54 AM   #4
Major Player
Join Date: May 2007
Location: Ireland
Posts: 579
I think it might not work until you can create the glass in front of the background look by whatever means neccessary. Light reflections, a bit of glare etc maybe even the odd scratch. And then another one for the other panel. As Nathan said, try to get yourself into a similar situation in real life and examine the look of the glass for designing your layers.
Also the thicker the glass the more distorted the image outside it, and these glass panels are very thick.
Ger Griffin is offline   Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

Omega Broadcast
(512) 251-7778
Austin, TX

(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

(800) 238-8480
Glendale, CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Cross-Platform Post Production Solutions > Digital Compositing and Effects

Thread Tools Search this Thread
Search this Thread:

Advanced Search



All times are GMT -6. The time now is 10:38 PM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2015 The Digital Video Information Network