Usually means: Distance from lens to focus.
Definitions Related words Mentions
We found 4 dictionaries that define the word back focal length:

Computing (1 matching dictionary)
  1. back focal length: Encyclopedia

Medicine (2 matching dictionaries)
  1. online medical dictionary (No longer online)
  2. Back focal length: Medical dictionary

Science (1 matching dictionary)
  1. Back Focal Length: Extragalactic Astronomy



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