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

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