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What are the 4 determinants of exposure?
- 1. amount of light in the sean (ambient Flash)
- 2. Iso- Film speed (sensitivity)
- 3. Aperture - Controles quantity of light
- 4. Shutter speed- controles sduration of light exposure.
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What is exposure?
bolth amount of light projected and the resulting density of the over all final print.
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Light meters Read what percent of gray?
18%
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when using Ambient light or flash what should you avoid doing?
Fast shutter speed. Because of too much light.
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What does ISO stand for?
International standerds organization
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what is the ordor of ISO's starting witht the slower (sharper) to fast (more grain/ noise)
25 ,50,100,200,400,800,1600,3200
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What is noise?
Lots of sepcs and faded with gain
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What is the advantage of slow ISO Speeds?
Greater detail but almost impossable to render moving objects/ subjects.
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what is the advantage of middle road ISO?
Its a fiae grain and its fast enought there is no need for a flash. You can capture motion in low light areas.
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what is the advantage or use for the higher end ISO's 800 -3200
Used to freeze image. Bigger grain lots of image noise.
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Cuts in half or doubles the amount of sensitivity to light?
ISO
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Define the meaning of Aperture?
Controls the Quantity or size of the hole in lens.
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Aperture is massured use what types of stops?
F-Stops
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recite in ordor the F-Stops for Aperture?
32,22,16,11,8,5.6,4,2.8,2,1.4
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cuts in half or doubles the amount of light.
amerture F-Stop
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What contoles the depth of field?
Aperture
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Smaller the hole in the aprature the ___ the image.
Sharper (used for landscapes)
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f-2 is Larger (more light) or smaller (Less light)
Larger (more light)
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f-16 is an example of Smaller hole (less light) or larger hole (more light)
Smaller (less light)
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Larger aperture the ______depth of fild.
Shallower.
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Shutter speed controls?
the amount of time the shutter is open. Its basically a window with moving door that opens and closes with the button.
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to freeze or blurr an Image you change the?
Shutter speed.
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list the shutter sizes in order Starting with the slow speed and going to fast.
B (bulb) 1,2,4,8,15,30,60,125,250,500,1000
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