Depth of field in reference to eyeglasses is the preferred reading distance and its smaller surrounding area. This is the distance used for single vision readers.
Depth of field is the depth of the specimen clearly in focus and is greater at lower magnifications.
As the magnification increases, the depth of field decreases.
Depth of field is best demonstrated with a slide containing overlapping threads. The depth of field that would increase is the low power objective.
No its actually the opposite
The depth of field decreases.
The higher the magnification the lower the depth of field.
Depth of field decreases from low to high. This means what you see under the microscope is blurry. If both objects are not blurry, this means you have high depth-of-field.
Depth of field in photography is 3-dimensional and is measured from the foreground moving along a horizontal plane towards the background. Maximum depth-of-field means most of the scene is in focus and shallow depth-of-field means the minimum is in focus. Shallow depth-of-field lets you lose the background into a nice blur leaving the foreground in focus - good for portrait photography. In landscape photography you would normally choose the maximum depth-of-field so that distant hills were in focus as well as the middle ground and the foreground - in other words, everything in the field of your vision would be sharply focussed.
Framelines - 2011 Depth of Field 2-5 was released on: USA: 4 April 2014
Yes, all other things being equal. The longer the focal length the shallower the depth of field. It also depends on the distance from the lens to the subject and the aperture used to create the photo. For a given lens, the depth of field increases as the subject distance increases. For a given distance, depth of field increases as the aperture gets smaller (e.g. F4 less, F8 more depth).
Water pressure = height (depth) * density of substance * gravitational field strength
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