Depth-of-Field
Depth-of-field is the area that is sharply focused, which is controlled by 3 factors:
- Aperture (larger apertures give you less depth-of-field, smaller apertures give you more)
- Focal length (telephoto lenses have less depth-of-field, while wide-angle lenses have more)
- Distance between subject and camera (the closer you get, the less depth-of-field you'll have)
| Aperture:
f2 Focal length and distance is constant |
Aperture: f8 Focal length and distance is constant |
Aperture: f22 Focal length and distance is constant |
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Low depth-of-field (background and foreground is blurred) |
Medium depth-of-field
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High depth-of-field (background and foreground is sharp) |
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| Area of focus is small | Area of focus is average
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Area of focus is large | ||
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| f2 is a large aperture | f8 is a medium aperture | f22 is a small aperture | ||
The range of apertures differ from one lens to another. |
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