focal plane
The "focal plane" is crucial in various optical devices like cameras and microscopes for achieving clear and sharp images.
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Definition
C1Optics
(technical)A flat surface perpendicular to the lens or mirror axis where light rays converge to form a clear image.
Example
- In a telescope, adjusting the lens moves the focal plane to achieve a sharp image.
B2Photography
(technical)The area in a camera where the image is in the sharpest focus, essential for controlling depth of field.
Example
- The photographer adjusted the focal plane to ensure the subject was perfectly clear.
Similar
Terms that have similar or relatively close meanings to "focal plane":