Friday, August 31, 2012
Finish Basics
closer to subject - less depth
What lens would you use for fast-breaking news? Not a telephoto, because not everything would be in-focus.
Aperture
f/22 - very small opening
f/1.8 - very large opening
Three factors that affect depth of field
aperture
camera-object distance
focal length of lens
At low light levels the iris of a camera must be wide open (at the lowest f-stop number) to allow in the maximum amount of light. As the light level increases in a scene the iris of the lens must be stopped down (changed to a higher f-stop number) to maintain the same level of exposure on the camera target.
Digital
NTSC - 525 lines at 30/seconds
60 fileds/second
Camera Moves
Left, right
Tilt
Pedestal
Tongue
Crane or boom dolly
truck or track
crab - sideways motion of crate dolly
arc- curved dolly or truck with a mobile camera mount
cant - tilting sideways
zoom
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Be thinking of a story to tell
we will be scripting soon
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The Parameters Aspect Ratio
4:3
16:9
Framing:
Close-Ups (right below the neck and to the top of the head)
XCU - Extreme Close Ups (just a face..or eyes..or of a watch..)
"Rose Bud"
Medium Shots (there are particular areas you don't crop..
"cowboy shot" - at the thigh?
Full Shots "Royal Wedding" (dancing around the room)
Long Shots
Extreme Long Shots
Content:
Establishing Shot - establishes the locale, typically a wide shot that tells you where AND what time (period).
Single - Dirty Single (kinda like an over-the-shoulder but just barely any of the person's shoulder/figure..usually closer up)
Content - Over-the-shoulder (self explanatory) just don't cross the 180 line
depending on number of ppl in shot...3-shot , 4-shot
Low Angle - camera low, looking up
High Angle - looking down, (diminishes people..)
Perspective:
- Canted/Dutch/Oblique
- Point of View (POV)
Subjective - feel like you're in the shot
Lenes:
- Wide Angle Lens (distance looks a lot farther)
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Composition
- The X and Y axes - Rule of Thirds "it's along those lines"
- Simplicity (cactus? bridge? payphone?)
- Leading Lines (vector lines)
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Next week we start scripting.
**Know to white balance, focus, etc**
Wednesday, August 29, 2012
Codec & Camera Review
Types of frames in MPEG compression/encoding
P > I > B
I frame - reference frame
B frame - looks forwards and backwards
P frame - predicts based on the other frames
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Quick Camera Tips
slower shutter speed can help when hand-holding camera
**Read Online Article** twill be posted on D2L
Dolly - move camera closer or farther away
Truck - move camera left & right
Pedestal - move camera up or down
Camera specs & colors:
If Y and three Cs are combined: composite or NTSC signal (interference, esp. with generations)
If Y (b&w values) separate from t###
Use component cable when available over composite.
Wheel
Use NDs (Neutral density) on filter wheel if bright sunlight
Blue of cloudy outdoor and fluor (green) / red of indoor - use color filters on wheel
"This is a lengthy discussion...we're talking about focal length now" - Dr. BK
Wide angles show action really nice. (step close of course..)
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