f stop, 167

0.3mm pinhole with a thickness of .002” This is the optimum size aperture for this focal distance and provides the best sharpness, color saturation, and contrast.

These are scientific grade apertures and have been utilized by universities and laboratories. The second photo shows the pinhole at 800x under the microscope.

Angle of view, 46.6 degrees This would be the equivalent of a normal lens or a 50mm lens on a 35mm film or full frame digital camera.

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