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Meaning of focal plane | Babel Free

Noun CEFR B2

Definitions

Any plane perpendicular to the axis of a lens or mirror.
Such a plane, in a camera, microscope etc, in which the real image is in focus.

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

focal point Focal-plane focaliser focalism focality focalization