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ACTUAL EXPOSURE TIME CALCULATION METHOD AND IMAGING DEVICE, OPTICAL DEVICE, CAMERA SYSTEM AND ACTUAL EXPOSURE TIME MEASURING DEVICE
ACTUAL EXPOSURE TIME CALCULATION METHOD AND IMAGING DEVICE, OPTICAL DEVICE, CAMERA SYSTEM AND ACTUAL EXPOSURE TIME MEASURING DEVICE
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机译:实际曝光时间计算方法和成像设备,光学设备,照相机系统和实际曝光时间测量设备
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摘要
An optical apparatus includes a mechanical shutter in addition to a mechanical diaphragm. The optical apparatus obtains a shutter shifting amount based on acceleration data of the shutter, obtains a total light exposure in a period of time required for the shutter to completely close an aperture of the diaphragm having a predetermined F-number, and calculates an actual exposure time by dividing the total light exposure by a light exposure per unit time calculated from an aperture area of the diaphragm having the predetermined F-number in an opened state.
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