The pinhole camera, or camera obscura, is a simple device;
essentially a small hole is made in one end of a box (the tradi-
tional demonstration uses an oatmeal container or shoebox)
and an image is formed on the other side of the box (see Fig.
1). The optics of how the pinhole camera works has been de-
scribed in detail elsewhere.1,2 Traditionally, the pinhole cam-
era was built using photographic film.3 But with the advent of
digital cameras and decline of film photography, we decided
to adapt the activity for a digital camera, and the results were
quite nice (Fig. 2). Other recent publications have explored
the use of digital cameras4 and pinholes5,6 for studying optics
in secondary physics classes. This activity brings together
technology and optics.