The beam-restriction device that results in images with the most unsharpness around the edge of the image is the

Question

Quizplus · Accepted Answer

The aperture diaphragm is a simple form of beam-restriction device that does not have any added features to focus or sharpen the beam's edge, leading to more unsharpness around the edges of the image compared to other devices like collimators or cones/cylinders that are designed to better focus the beam and reduce such unsharpness.

The Beam-Restriction Device That Results in Images with the Most