I am some what of a technical engineer at an independently run TV studio and we just recently purchased a 73 inch Mitsubishi DLP monitor. We want to have the ability to place a subject in front of the monitor and use the image in the monitor as a live background. The problem is I cannot figure out an efficient way to calibrate the DLP or edit the video image so that it appears as a live image. All my images are blown out, the levels are off, and indoor shots appear red while outdoor shot are distinctively blue. I know this is normal, but I don't want it. Is there something I can do aside from getting professional filters for my video camera.
Thanks to anyone who tries to answer this....
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This is why people use chromakeying instead of rear-projection. Lighting of the subject is as important, if not more so, than the calibration of the background image. The problem is that in order to get the subject far enough away to light correctly without too much spill on the screen, your DLP needs to be much larger. You will never get the same richness of colour that you would be able to get with chromakeying, nor the same clarify and sharpness.
Read my blog here.
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I had the same problem at my station. The best advice I can give you is to feed color bars into the monitor, then have someone stand there while you you point a camera at them and tweek the settings on the monitor until you find something acceptable. Then repeat the process with 'real' video. Unfortunately, you'll probably be disappointed with the results. Good Luck!
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Thanks for your input guys, i really appreciate it. Unfortunately I do not own my own studios so I don't get any say in what we do...people just ask me to make it happen.
Here was what I did, in case anyone wants a third alternative to the above replies:
1 - You can adjust the settings on the monitor to display less chroma and less brightness. I found that to be a satisfying quick fix (I also used colorbars on the monitor and looked at it through another monitor feeding straight from the in-studio camera).
2 - Pop the video or still into any video editing software and adjust the levels so that your blacks remain the same, but your whites are not as white. You will have to play with the settings based on your likings.
3 - I am sure there is an expensive ass camera filter they sell to do all this for us...
Hope that helps...I feel weird replying to my own post like this
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