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HD cams Diferences


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#1 Miguel Bunster

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Posted 24 August 2005 - 09:29 AM

Hi,
I will be working on a small HD thing soon at Panavision. I have use the f900 of clairmont but new to the panavision one. Are there any mayor differences in where the buttons are? Menu modifications etc? As well as I understand there will be some green screen. I have done it before in other mediums but not in HD any recommendations would be great. Thanks very much!
Miguel
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#2 David Mullen ASC

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Posted 25 August 2005 - 12:13 AM

Clairmont has done more physical improvements, the main one replacing the aluminum frame holding the lens & CCD block together with a steel one that is less temperature sensitive. But otherwise, it's the same camera.

For greenscreen, light it well, evenly, underexpose it a little compared to the key, keep it far back as possible, flag off spill, etc. -- the main thing is turn off the Matrix and don't use it or white balance tricks to "improve" the color of the greenscreen. Get it correct with lighting. I'd also turn off Detail.
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#3 Miguel Bunster

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Posted 25 August 2005 - 04:47 AM

David,
Thanks once again!
Miguel
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#4 Miguel Bunster

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Posted 25 August 2005 - 11:11 AM

Hi,
Do you backlight with a yellow filter on the light to take away any green spill in the FG subject? And in your experience whats a good detail level?
Miguel
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#5 David Mullen ASC

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Posted 25 August 2005 - 10:57 PM

You'd use yellow backlight to cancel spill from a BLUEscreen and magenta backlight to cancel spill from a GREENscreen. But I don't believe in that technique however because you often end up with a yellow or magenta backlight on the subject which doesn't match the background plate.

A little WHITE backlight should be enough, especially if you dull down any shiney areas and move the screen WAY back and underexpose it a little.

You probably shouldn't use ANY detail in HD with a green or bluescreen.
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