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| How film or CCD sensitivity is expressed |
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| Black and White Photograph |
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@font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; }
= intensity x time
AMOUNT OF LIGHT ALLOWED THROUGH THE LENS BY THE APERTURE OR F-STOP LENS OPENING – in conjunction with -- THE DURATION OF TIME THAT THE LIGHT IS ALLOWED THROUGH THE LENS AS CONTROLLED BY THE SHUTTER SPEED. THE COMBINATION OF THE TWO DETERMINES HOW MUCH LIGHT STRIKES THE FILM OR DIGITAL SENSOR TO MAKE AN EXPOSURE. |
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| How the aperture is expressed. The smaller the number the more light is allowed in |
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| Created at the moment the film is exposed |
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| When too much light has hit the film |
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| When too little light has hit the film |
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| Controls intesnity of light and depth of field |
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| Three factors that control DOF |
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@font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; }ol { margin-bottom: 0in; }ul { margin-bottom: 0in; }
1. APERTURE OR F-STOP
2. FOCAL LENGTH OF LENS
3. DISTANCE FROM CAMERA TO SUBJECT
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| Two types of exposure meters |
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| Measures the light reflected by the subject. They are generally Center Weighted, Spot, or Matrix. Some cameras have all three. Meters in SLR cameras are reflected. @font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } CAN BE “FOOLED” BY VERY LIGHT TONED OR WHITE OBJECTS AND BY BRIGHT BACKGROUNDS. CONVERSELY, THEY CAN BE “FOOLED” BY VERY DARK TONED OR BLACK OBJECTS AND BY DARK BACKGROUNDS. |
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| Measures the light falling on the subject |
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| Averages all the light reflected from the area it measures and places it on middle gray. |
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| @font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } A TONE THAT REFLECTS 18% OF THE LIGHT THAT HITS IT. IT IS HALF WAY BETWEEN WHITE AND BLACK. |
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| ARE AVAILABLE TO PHOTOGRAPHERS AS AN AID IN DETERMINING EXPOSURE. |
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| Taking more than one exposure of a scene |
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| @font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } MARGIN FOR ERROR THAT ALLOWS A CERTAIN AMOUNT OF UNDER OR OVEREXPOSURE WITHOUT SACRIFICING THE ABILITY TO OBTAIN A “GOOD” IMAGE. |
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| @font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } HAS GREATER LATITUDE THAN REVERSAL FILM OR DIGITAL PROCESSES AND THE LATITUDE FOR OVEREXPOSURE IS GREATER THAN FOR UNDEREXPOSURE. |
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| DIGITAL IMAGING OR REVERSAL (TRANSPARENCY) FILM |
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| Opposite of how to deal with negative film. It's better to underexpose then overexpose when taking a pictue. "Expose to the right" of the histogram. |
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| A graph that plots the tones of a digital image |
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| @font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } LORD WILLIAM THOMSON KELVIN |
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@font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; }
A BRITISH PHYSICIST, DEVEOPED A SCALE TO MEASURE THE COLOR QUALITY OF LIGHT. IT IS NOW KNOWN AS THE KELVIN SCALE AND THE COLOR OF LIGHT IS MEASURED IN KELVIN DEGREES.
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| @font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } AVERAGE DAYLIGHT |
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| @font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } 5500 Kelvin Degrees |
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| @font-face { font-family: "Arial Black"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } 3200 Kelvin Degrees |
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