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  2. Depth of field - Wikipedia

    en.wikipedia.org/wiki/Depth_of_field

    For example, on the Minox LX focusing dial there is a red dot between 2 m and infinity; when the lens is set at the red dot, that is, focused at the hyperfocal distance, the depth of field stretches from 2 m to infinity. Some lenses have markings indicating the hyperfocal range for specific f-stops, also called a depth-of-field scale. [43]

  3. Data system - Wikipedia

    en.wikipedia.org/wiki/Data_system

    In education, a data system is a computer system that aims to provide educators with student data to help solve educational problems. [3] Examples of data systems include Student Information Systems (SISs), assessment systems, Instructional Management Systems (IMSs), and data-warehousing systems, but distinctions between different types of data systems are blurring as these separate systems ...

  4. Depth map - Wikipedia

    en.wikipedia.org/wiki/Depth_map

    Fog effect Shallow depth of field effect. Depth maps have a number of uses, including: Simulating the effect of uniformly dense semi-transparent media within a scene - such as fog, smoke or large volumes of water. Simulating shallow depths of field - where some parts of a scene appear to be out of focus. Depth maps can be used to selectively ...

  5. Tilt–shift photography - Wikipedia

    en.wikipedia.org/wiki/Tilt–shift_photography

    Using tilt changes the shape of the depth of field (DoF). When the lens and image planes are parallel, the DoF extends between parallel planes on either side of the PoF. With tilt or swing, the DoF is wedge shaped, with the apex of the wedge near the camera, as shown in Figure 5 in the Scheimpflug principle article. The DoF is zero at the apex ...

  6. Focus stacking - Wikipedia

    en.wikipedia.org/wiki/Focus_stacking

    First two images illustrate typical DOF of a single image at f/10 while the third image is the composite of six images. Focus stacking (for extended depth of field) in bright field light microscopy. This example is of a diatom microfossil in diatomaceous earth. Three source images at different focus distances (top left) are combined with masks ...

  7. Scheimpflug principle - Wikipedia

    en.wikipedia.org/wiki/Scheimpflug_principle

    Depth of field when the PoF is rotated When the lens and image planes are parallel, the depth of field (DoF) extends between parallel planes on either side of the plane of focus. When the Scheimpflug principle is employed, the DoF becomes wedge shaped (Merklinger 1996, 32; Tillmanns 1997, 71), [ f ] with the apex of the wedge at the PoF ...

  8. Data processing - Wikipedia

    en.wikipedia.org/wiki/Data_processing

    A data processing system is a combination of machines, people, and processes that for a set of inputs produces a defined set of outputs. The inputs and outputs are interpreted as data , facts , information etc. depending on the interpreter's relation to the system.

  9. Data analysis - Wikipedia

    en.wikipedia.org/wiki/Data_analysis

    Data collection or data gathering is the process of gathering and measuring information on targeted variables in an established system, which then enables one to answer relevant questions and evaluate outcomes. The data may also be collected from sensors in the environment, including traffic cameras, satellites, recording devices, etc.

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