Hole size calculation
Enter the value and select the unit of the check box. Click “Calculate” and the result will show the conversion value between each unit.
Input data: camera depth: 5 inches; aperture (small hole to mirror distance): 5mm; metering hole: 10; exposure time: 1/5, click "calculate" to display the result.
Output: The imaging diameter was 6.5 inches; the optimal aperture diameter was 0.5 mm; the aperture number was 25; the exposure factor was 6; and the aperture exposure time was 1.2 seconds.
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