Selecting the proper film and developing the optimal radiographic technique for a
particular component depends on a number of different factors;
Composition, shape, and size of the part being examined and, in some cases, its
weight and location.
Type of radiation used, whether X-rays from an X-ray generator or gamma rays
from a radioactive source.
Kilovoltage available with the X-ray equipment or the intensity of the gamma
radiation.
Relative importance of high radiographic detail or quick and economical results.