In the world of film pay much attention to the depth of field. With digital cameras is more complicated, since small CCDs that capture the produce light much more depth of field than any lens of cinema. For depth of field is traditionally understood in optics, and photography in particular, as the area in which the image captured by the goal is clear (ie focused), so that in the photograph place, people and objects located within that area will also appear sharper.
A more complete and accurate definition would be: The depth of field is the space in front and behind the focused plane, between the first and last points clear substantially reproduced in the same plane of focus.
Techniques:
1. Gives priority to long lens shots. The more telephoto, less depth of field. These lengths of focus also contribute to reduce the contrast and saturation, due to atmospheric elements.
2. Give priority to aperture priority (start wider aperture, which gives more depth of field) and adjust the lighting as well, instead of illuminating first and then adjust diaphragm.
3. Plan on leaving some distance between subject and background in the shots. Do not let excessive sharpness of the set divert attention the public to where they want.
Practices:
- Opening
diaphragm aperture diaphragm A more shallow depth of field.
As shown in the picture, the picture taken f/2.8 (more open aperture) has a depth of field.
also see that the picture taken at f/22 (smaller aperture opening) has a greater depth of field.
- The focal length (zoom)
A longer focal length (more zoom) shallow depth of field.
As shown in the picture, the picture taken with a zoom lens has a depth 35 mm field greater than the photo taken with a 100 mm zoom.
- The actual distance between the camera and focus point.
The shorter the distance to the subject that focuses less the depth of field.
As shown in the picture, the picture taken at 1.5 meters from the subject has a depth of field that the photo taken at 4.5 meters.
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