The sun is the most important and widely used of all light sources.
Until faster film emulsions were developed, the popular belief was
that it if the sun was out it was an ideal day to take photographs.
is one source of light everyone recognizes as bright enough to take
however, is extremely variable and can change dramatically from location
to location and minute to minute. Although the subject might be the
same - the resulting image can be quite different as the inherent
factors of light alter - this includes the following: