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focal depth

   Also found in: Dictionary/thesaurus, Legal, Financial, Encyclopedia, Wikipedia 0.01 sec.
depth (depth) distance measured perpendicularly downward from a surface.
focal depth , depth of focus the measure of the power of a lens to yield clear images of objects at different distances.
focal depth
n.
A measure of the power of a lens to produce clear images at different distances from it. Also called depth of focus.


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