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Understanding Shutter Speed, Aperture and ISO PHOTOGRAPHY BASICS
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the process and art of capturing lightPHOTOGRAPHY
In Greek:φῶς (photos) "light" and γραφή (graphé) "drawing"
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PHOTOGRAPHYBlending the Technical and Creative
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The Camera’s Eye
Similar mechanics but far different in how they see light
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The Camera’s Eye
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Camera Mechanics
DSLR “Digital Single Lens Reflex”
Uses a mirror & prism system that permits the photographer to view through the lens what will be captured
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Camera Controls
3 main manual functions of the camera
- Shutter Speed -- Aperture -
- ISO -
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Creative Shutter SpeedsA measurement of exposure to light
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Shutter Speed
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Fast Shutter Speeds
Stops Action
More light allows for faster shutter speeds
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Slower Shutter Speeds
Generally slower than 1/30 sec
Creates motion and blur
helpful in low light situations
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Blur/Stop Action
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Blurring vs. Panning
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- Slow shutter speeds let in more light- Good for low light situations- Blur is an issue
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- Slow shutter speeds saturate color
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There is no magic number for correct shutter speed, every lighting condition is different
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A blurry photo can be caused by low light, subject movement, camera movement, a shutter speed that’s too slow...
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The more available light, the faster the shutter speed
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Always support the lens with your left hand
Shutter speeds slower than 1/10 of a second require a tripod
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Obama, you’re doing it wrong!Thursday, January 17, 13
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Aperture and Depth of FieldThursday, January 17, 13
Aperture
Known as f/stop
Controls amount of light
Changes depth of field
Works like the iris and pupil of your eye
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Aperture
Think in reverse: small aperture, large number
Amount of Light
Depth of Field
Page 20
Aperture controls
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Depth of Field
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Depth of Field
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Depth of Field
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Depth of Field
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- Use less depth of field to draw attention to specific areas
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ISO
ISO increases sensitivity to light
Lower the light, the higher the ISO
Ranges from 100-3200 ISO or higher
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ISO 100
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ISO 100Thursday, January 17, 13
ISO 200
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ISO 400
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ISO 400
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ISO 800Thursday, January 17, 13
ISO 1600
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ISO 1600Thursday, January 17, 13
ISO 3200
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ISO 3200
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ISO 100 ISO 3200
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ISO 200 ISO 3200
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Read and review Pg. 1-25, 205-211
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Determining Exposure
1. Adjust ISO for lighting conditionTry to keep ISO as low as possible, prevent grain/noise
Higher ISO’s will allow for faster shutter speeds
2. Shutter Speed and ApertureCombine aperture (f-stop) and shutter speed for correct exposure
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Equivalent Exposures
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Histograms and Exposure
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Nikon v. Canon
Nikon D3000 Canon T3i
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Nikon v. Canon
Nikon D3000 Canon T3i
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