Definition of aperture and how the aperture can be used to control Depth of Field.
Text of Aperture & Depth Of Field
1.Aperture & Depth of Field Digital Photography Apollo Technology Education
2. Aperture:Controls the amount of light entering the camera through the lens.Every lens has an aperture. 3. 4. Depth of Field:(DOF) the portion of a photograph that appears acceptably sharp or in focus. Two Major Variables: Aperture Focal Length 5. 6. Example: deep or broad Depth of Field 7. Example: a narrow Depth of Field 8. focal length: 200 mm Narrow Depth of Field