FOCUS DETECTION DEVICE AND FOCUS DETECTION METHOD
A focus detection device, comprising an image sensor that outputs an imaging signal, and one or more processors constructed in hardware, the processor performing focus detection using a phase difference detection method based on the imaging signal, wherein the focus detection performs first focus de...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A focus detection device, comprising an image sensor that outputs an imaging signal, and one or more processors constructed in hardware, the processor performing focus detection using a phase difference detection method based on the imaging signal, wherein the focus detection performs first focus detection based on a signal that has been obtained by subjecting the imaging signal to first filter processing, performs second focus detection based on a signal that has been obtained by subjecting the imaging signal to second filter processing if reliability of the first focus detection is lower than a specified value, and if it is determined that reliability of the second focus detection is lower than a specified value executes third focus detection based on a picture signal that has been obtained by adding a plurality of imaging signals that have been obtained at different times. |
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