Focal Length

Views Updated: Dec 15, 2025

Key Facts

Abbreviation
FL
Pronunciation
/ˈfoʊkəl lɛŋθ/
Category
Miscellaneous
Related Field
Photography & Imaging

Examples in Context

  1. Focus : plane of focus; focal length; and depth of field.
  2. An image processing system computes the size of the reticle image and the focal length.
  3. The relation between the focal length of a concave lens and its reflective image properties is analysed and deduced.
  4. This method can correct the measurement of the thickness lens focal length lens produced by ignoring the error.
  5. We can therefore solve the problem by using different focal length in the process of tracking measurement.

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