The act, or an instance, of exposing a
sensitized photographic material, or the
product of the light intensity multiplied
by the duration of such an exposure.
Exposure is the heartbeat of photography. Put simply,
it is the process of light striking a photosensitive
material, such as fi lm, photographic paper or a digital
camera’s image sensor. Understanding and being
able to control exposure is critical to successful
However, it is a subject that, at times,
can appear complex and confusing – not only to
beginners, but enthusiasts as well. So many things
can infl uence exposure, including the time of day,
focal length of the lens, subject movement, light
source and any fi lters attached. Certainly, when I fi rst
began taking photography seriously as a teenager,
I found the theory and technicalities of exposure
tricky to understand. However, I quickly realized that
if you try to overlook this key fundamental, your
photography will suffer and never realize its full,
a unique moment that can never be repeated.
A good understanding of exposure is vital to
ensure your image is compelling to others and
faithfully captures the light, essence and mood
of that particular moment.
Nikon D800, 150mm, ISO 200, 1/3sec at f/22, tripod.