Recap Q&A: How Do You Shoot Solo?
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A ray of light issuing from a point on the subject, passing through a small hole, will strike the film plane in a very confined area. That same light passing through a larger hole would be spread out by the time it reaches the film plane. In other words, the large hole will produce a blurrier image than the small hole.
This holds true whether or not there is a refracting lens near the hole.