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Introduction to Special Effects
Blue Screen (Traveling Matte)
Static Mattes
Mattes Double-exposure matte
Double-Exposure Matte
Step 1 The original
scene - actors on a plain on a nice day.Not very spooky.
Double-Exposure Matte
Step 2 The sky is matted
out with black paper placed over the sky on the camera's lens.
Double-Exposure Matte
Step 3 The film is rewound
and a dark, cloudy sky is filmedwith a matte placed over the previously exposed portion of the film.
Double-Exposure Matte
Step 4 When the film is
developed, the two shots appear as one.Very spooky!
Variations on the Double-Exposure Matte
1. Computer generated
2. Separate shots optical compositing
Traveling Matte
Film a “cliff hanger”
1. The actor/actress can do it
2. Stunt person
3. Blue screen special effects
Traveling Matte
Step 1 Background plate:
film the river gorge on location
Traveling Matte
Step 2 Film of the actor
dangling from a rope in the studio, shot in front of a blue screen
Traveling Matte
Step 3: Filter to create silhouettes
A matte of the actor’s silhouette.
The reverse matte of the actor’s silhouette.
Traveling Matte
Step 4 Combine the
background and the actor’s silhouette.
Traveling Matte
Step 5 Rewind the film and
re-expose it to lay the actress into the "hole" that the matte created
This is what the matted actor looks like
Traveling Matte
Step 6 And the final shot
looks like this
Traveling Matte
In order for it to work: Actor’s (subject’s) diffusion must match
background No reflection from blue screen Can’t wear blue
Ease of computers/digital