How to Expose

How to make an Exposure The Trinity and Beyond

White Balance
AWB-auto white balance
Daylight
Shade
Cloudy
Tungsten
Flourescent
Flash
Custom

The Trinity-Aperture
Controls how large the opening is that lets light through to the sensor
Called f-stops
Full stops
1,1.4, 1.8, 2.0, 2.8, 3.5, 4, 5.6, 8, 11, 16, 22,32
Controls depth if field
The higher the number the smaller the aperture hole is
The higher the number the more depth of field
To change the aperture press the AV button while scrolling with the main dial

Depth of Field

The Trinity-Shutter Speed
Controls how long light passes through to the sensor
Change shutter speed with main dial
Can be anywhere from 1/4000 second to 1 second to minutes
1/500=one five hundredth of a second
1” = one second
Anything under 1/60 will have motion blur from your hands shaking (called camera shake)
Bulb setting-shutter stays open as long as you press the button

Fast Shutter Speed

Slow Shutter Speed

ISO
Controls how sensitive your sensor is
Runs in multiples
50, 100, 200, 400, 800, 1600, 3200
100-400 for bright light
400-800 for less light
1600 for very dark situations
After 800 you begin to have lots of noise
Your ISO will affect the choices of aperture and shutter speed available to you
A higher ISO will allow you to use faster shutter speed

Add all three and you have an Exposure
Now we have to combine all three to make our exposure
Set your white balance
Set your ISO
Make choices about aperture and shutter and use your light meter to get the correct exposure

Light Meter
Measures the light coming into the camera
This measurement allows you to choose the correct aperture and shutter speed
Press the shutter release half way down to get a light meter reading
The goal is to get the blinking bar in the center of the light meter bar
Choose a aperture or shutter speed that you want to start with and then then scroll with the other (aperture or shutter speed)until you have the bar in the middle

Underexposed Overexposed

Summary of Making an Exposure
Set your white balance
Set your ISO
Choose your shutter speed or aperture
Use your light meter to get the corresponding shutter speed or aperture
Take the photo and check your LCD to see if it is properly exposed

How to Expose

by alorino

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How to Expose Presentation Transcript