Pinhole cameras: artifacts modifications, and recording of pinhole images of screen-film systems.

This paper will discuss three points concerning the x-ray pinhole camera: a) pinhole artifacts, which may erroneously be interpreted as off focus radiation, will be described along with a simple method of eliminating these artifacts, b) modifications to a commercially available pinhole camera which simplifies its use and allows for the proper leveling of the pinhole mounting plate will be presented, and c) the use of screen-film cassettes to reduce the required technique for recording the pinhole image will be discussed along with data indicating the expected error with this technique relative to dental film recording.