| Shutter Speed |
How long the film or sensor is exposed to the light. |
- Slow Shutter Speed (1/125 sec or longer)
- Light is let in for a longer time.
- Moving objects may be blurred.
- Fast Shutter Speed (1/250 sec or shorter)
- Light is let in for a shorter time.
- Moving objects frozen.
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| Aperture |
How much light is allowed in for a given amount of time. |
- Wide Aperture (f/4 or lower number)
- Lets more light in.
- Shallow depth of focus (e.g. blurred background, sharp foreground).
- Small Aperture (f/8 or higher number)
- Lets less light in.
- Deep depth of focus (e.g. sharp foreground and background).
|
| ISO |
The sensitivity of the film or sensor. |
- Low ISO (200 or lower)
- Lower Sensitivity.
- Takes more light to get the "right" exposure.
- High ISO (400 or higher)
- Higher Sensitivity.
- Takes less light to get the "right" exposure.
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