depth of focus


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depth of focus

[¦depth əv ′fō·kəs]
(optics)
The range of image distances corresponding to the range of object distances included in depth of field.
References in periodicals archive ?
The limitations on the depth of focus have existed ever since the first optical microscope was created.
It had a 6-km depth of focus and was tectonic in origin.
PhiVolcs said that it had a depth of focus of 78 km.