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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