Iris & Aperture

  1. Light Intensity Control: It regulates the amount of light entering an optical system to prevent sensor saturation and ensure optimal brightness.
  2. Contrast Enhancement: By narrowing the aperture, it reduces stray light and diffraction, significantly improving the visual contrast and clarity of an image.
  3. Depth of Field (DoF) Adjustment: A smaller aperture increases the depth of field, keeping more of the subject in focus across different distances, whereas a larger aperture creates a shallower focus.
  4. Beam Shaping: It is used to limit the diameter of a light or laser beam to match specific experimental requirements.
  5. Resolution Balancing: It helps find the "sweet spot" between image sharpness and light diffraction in high-precision optical systems.
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