The depth of focus (in English depth of focus DOF) is the area in the image space of the imaging optical system in which a sufficiently sharp image of a focused created object.
This means that the image plane (an image sensor , a photographic film ) can be shifted in the range of the imaging depth without the image of an object becoming noticeably blurred. So that the depth of focus is the counterpart to the depth of field (Engl. Depth of field , DOF), because these is the area in the object space , which is displayed sufficiently sharply on the image plane.
The area in front of and behind the focal plane in which the image can be photographed sharply is called the left and right imaging depth. Together they result in the (total) imaging depth.
- Heinz Haferkorn: Optics: physical-technical basics and applications . 4th, arr. and exp. Edition. Wiley-VCH, Weinheim 2003, ISBN 3-527-40372-8 , pp. 287 f .
- Lexicon of Physics . Spectrum Academic Publishing House.
- Optical terminology (PDF) EF LENS WORK III. Canon Europe, September 2006. German edition
- Depth of Field and Depth of Focus Nikon Instruments Inc.
- ↑ Heinz Haferkorn: Optics: physical-technical basics and applications . 4th, arr. and exp. Edition. Wiley-VCH, Weinheim 2003, ISBN 3-527-40372-8 , pp. 287 f .