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Up Blue/Green screen setup... - 03-21-2007, 05:54 PM

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03-21-2007, 08:13 PM

Gr8...
Thanx
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03-21-2007, 08:15 PM

is it possible to Remove Blue Screen in Premier...?
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03-21-2007, 08:32 PM

Hmmm... What I'll Choose... Green or Blue?

On film, the green layer has the finest grain structure. On NTSC video, the green channel has the highest sampling rate.

The blue layer of film is sharpest but is also the grainiest layer. In video, it is the noisiest channel. If you are shooting DV Video (4:1:1), it is probably best to stick with green screen.

Then What will be the Screen? Mother's old Saree... hihihi

Finally What will be to Lightning...? Fluorescent or Incandescent lighting....
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03-21-2007, 11:40 PM

Quote:
Originally Posted by GNS
is it possible to Remove Blue Screen in Premier...?
yeah!!
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03-21-2007, 11:41 PM

Quote:
Originally Posted by chaminga_d
Hmmm... What I'll Choose... Green or Blue?

On film, the green layer has the finest grain structure. On NTSC video, the green channel has the highest sampling rate.

The blue layer of film is sharpest but is also the grainiest layer. In video, it is the noisiest channel. If you are shooting DV Video (4:1:1), it is probably best to stick with green screen.

Then What will be the Screen? Mother's old Saree... hihihi

Finally What will be to Lightning...? Fluorescent or Incandescent lighting....
Pros and Cons of blue screen vs. green screen
1. If you are shooting on film and plan on doing the composite through traditional
optical methods. you must shoot blue screen.
2. A Green Screen generally takes less light to light it.
3. The blue layer of film is sharpest but is also the grainiest layer. In video, it is
the noisiest channel.
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03-21-2007, 11:41 PM

Concept of Blue / Green Screen
Blue Screen was originally invented as a film technique to separate the actors and
composite them over another background. Blue was originally chosen because it is
the one color which does not exist in skin tone. Skin tone is made of a combination
of red and green.
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03-21-2007, 11:43 PM

Procedures:
1. Screen should be no closer than 12-15 feet from the foreground.
2. Director of Photography should NOT use: Low Contrast, Fog, Diffusion, Super Frost
Filters or smoke when shooting blue/green screen.
3. Light up the blue/green screen and leave the foreground image in darkness.
This will give you the opportunity of visually inspecting where all the blue/green
spill occurs. Much of it will disappear when the foreground lights are on.
4. Check all angled and glossy surfaces for unintentional reflectance of the
blue/green screen. Spill can sometimes be canceled by applying lighting to the
offending area or cleaned up with dulling spray.
5. When the screen is lit, view the screen with a spot meter and check for
uniformity. The screen should be within 1/5 stop tolerances in all visible areas. I
like to add a 1/2 or full stop minus green (3308) as well to help. When the screen
is evenly lit, it pulls a better matte.
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03-22-2007, 12:20 AM

TNKZ BAN.....!!!!
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03-22-2007, 12:24 AM

um ok.. tnx!
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