Boothby quiz 3 Cinematography
Explain why the sky is red when the sun nears the horizon at sunset.
The strong red light waves travel in the atmosphere and are refracted so the sky looks red.
What does SYNC mean
There is audio being recorded on an external device that goes with & syncs to the picture.
A shutter is a mechanical device inside of a camera that exposes film or electronic sensor to the light passing through the lens for a controlled period of ___.
Time
The color you perceive something to be is dependent on 2 things concerning light.
1. Color balance of light 2. Absorption or transmission of 3 primary colors by the material the light is hitting.
In the camera menu and on the lens a proper exposure is achieved by a combination of what 4 setting?
1. ISO 2. Recording Speed 3. Shutter Speed 4. Aperture
list 5 ways Light Energy can be affected when reaching a surface or material.
1. Reflected (Specular reflection: mirror or water) (Diffused: paper or wall) 2. Absorbed: anything black, asphalt 3. Transmitted (Direct: color gel) (Diffused: frost) 4. Refracted: Blue Sky / atmosphere 5. Dispersed: rainbow
Aspect ratio for Digital High Definition TV
16:9
Aspect ratio for Silent Film Cinema Standard
1:33
Aspect ratio for Cinema Natural Vision
1:85
Frame rate refers to the number of individual frames that comprise each second of video you record, known as fps (frames per second) In the left column write in the 2 most common / normal speed frame rates for each country.
24 fps U.S & Canada 30 fps U.S & Canada 25 fps Europe 50 fps Europe
Aspect ratio for Cinema Panoramic
2:35
If the clapper operator messes up the clap what will (s)he call out before he claps the slate a 2 nd time?
2nd sticks.
Common color temperature for Tungsten light
3200k Warm/Red
Aspect ratio for 35mm Still Photography
3:2
Aspect ratio for NTSC TV (1900's)
4:3
Common color temperature for Daylight
5600k Cool/Blue
What is the definition of a Foot Candle?
A unit of illumination equal to that given by a source of one candela at a distance of one foot.
Another name for a slate is ___.
Clacker clapboard sticks
What type of meter reads the color temperature of a light source?
Color Temperature Meter
Explain what is is that makes a particular slate a "dumb slate"?
Does not have a time code.
What type of time code is 01:00:59;28?
Drop Frame Time Code
Which Time Code shows the real running time of a scene or program?
Drop Frame Time Code
Explain what it is that makes a particular slate a "smart slate"?
Has a time code
2 types of Light intensity meters
Incident Light Meter reads amount of light from a source Spot Meter (direct/reflective) reads light reflected off a subject or surface
What scale is often used in the measure of the Color temperature of light sources?
Kelvin Scale
What does MOS mean
Mit out sound, no sound to go with tape (nor film)
Can you trust your eyes to accurately judge brightness/darkness of a set or scene?
No, human pupils have an auto iris and the main is an automatic color balance device.
Can you accurately judge the color of a set or scene.
No. Your brain constantly compensates and adjusts the perceived color of an object to appear to be the color it is supposed to be.
What type of time code is 01:10:00:00?
Non-Drop Frame Time Code
Which Time Code does not represent the real running time of a scene or program?
Non-Drop Frame Time Code
To avoid Iris Backlash when setting or making any change to the Iris setting always ___.
Open the iris all the way then close it to the desired setting.
Digital Image Sensors (the digital equivalent of the film) consist of millions of light-sensitive spots called _____ which convert light that has been transmitted through the lens onto the image sensor into digital information.
Photosites (pixels)
The 3 colors that make up white light are called ___.
Primary Colors
What types of scan protocol will a digital camera sensor perform to record 1 frame of an image and an LCD screen will perform to recreate that same 1 frame of an image.
Progressive Interlaced
Write the definition of the Inverse Square Law.
Rays from a point source spread farther and farther apart as their distance from the light source increases.
White Light is Electro-Magnetic Radiation comprised of 3 colors / wavelengths. List the 3 colors that make up White Light in the blanks below.
Red Green Blue
When you take away 1 of the 3 colors in White Light you are left with a ___.
Secondary Color
Every time the camera rolls in record the very first thing you shoot is ___?
Slate
What does SOF mean
Sound on film
What type of light meter is built inside most cameras?
Spot (Direct / Reflective) Meter
As a rule of thumb, you want the denominator of your shutter speed to be approximately double the number of frames per second the camera is recording. T/F
T
Shooting at 24 fps, (23.98fps) the equivalent shutter speed of a 180 degree shutter angle is 1/48th of a second and will produce natural motion blur similar to what we see with our naked eye. T/F
T
Shooting at 30 fps, (29.97fps) the equivalent shutter speed of a 180 degree shutter angle is 1/60th of a second and will produce natural motion blur similar to what we see with our naked eye. T/F
T
Explain why the sky is blue on a clear day and the sun is high in the sky.
When white light hits the earth's atmosphere the weak blue light waves are refracted by the earth's atmosphere
When more than 1 camera is shooting the same slate the slate is designated as a ___ slate.
common
A very fast shutter speed in a Motion Picture Camera will render images that have _____.
crisp edges and a frantic mood.
White Light minus Red
cyan
Each time you half the ISO setting (like: changing from 400 ISO to 200 ISO) you have ___.
decrease the sensors sensitivity to light by 1 stop
The iris is set to f/2.0 If you closed the iris down 1/2 stop toward f/2.8 what would the iris setting then be?
f/2.4
When the camera shoots a Slate which is right side up it is called a
head slate.
Each time you double an ISO setting (like: changing from 400 ISO to 800 ISO) you have ___.
increased the sensors sensitivity to light by 1 stop
A manufacturer determines the "Native ISO Rating" for a camera based on the ___ of the camera.
latitude
White Light minus green
magenta
Record Run Time Code means the time code ___.
only runs (counts up) when the camera is recording
The "aspect ratio" of an image describes the ___.
proportional relationship between the width and height of an image.
Free Run Time Code means the Time Code ___.
runs (counts up) continuously no matter if the camera is recording or not.
What does SOT mean
sound on tape
When the camera shoots a Slate which is upside down it is called a
tail slate.
White Light minus blue
yellow