Flash photography is the use of a camera flash bulb
in a variety of possible situations where there
doesn’t seem to be enough light. The most common use
of flash photography is group portraits at
gatherings where there is not enough light to take a
satisfactory exposure.
But there are many other situations where the flash
could be used such as: fill-flash situations when
the background is brighter than the subject, using
the flash to light up a room and creating better
coloring, or using the flash to freeze a moving
object in a dark situation.
Indoor
Flash Photography
In typical indoor situations there will probably not
be enough light to take a normal hand-held
well-exposed photo. There are many indoor flash
photo opportunities you may be faced with. You may
want to cast light on a group of people for a
portrait photo. You may want to throw light into a
room for an architectural photo. Or you may just
want to cast light on certain objects in a lighted
room that appears too dark for an exposure.
If your camera’s auto-exposure settings say that the
photo would require a shutter speed slower than 1/60
of a second then you probably shouldn’t hand-hold
the camera or the photo would come out blurry. The
reason it would come out blurry is because the
shutter would be open long enough for any minor hand
shake to distort the composition. The use of a
tripod or faster film will probably be needed but
many of us do not regularly carry a tripod. Most
photographers simply use their flash bulb when they
are inside.
In order to take effective indoor flash photos there
are some techniques you should keep in mind. When
using the flash do not point it directly at a mirror
or glass that will create a lens flare or just ruin
the photo. Stand close enough to your subjects so
the flash is actually effective (four to ten feet).
Try to make sure your main subjects are about the
same distance away from the flash as each other or
some that are closer to the flash will appear
brighter than ones that are farther away.
Fill
Flash Situations
Fill flash fills in the areas of a photo that would
normally appear too dark. Fill flash can be used for
sunny day portraits for shadows on a subject’s face
or to fill any shaded area that is out of the
sunlight. Fill flash can also be used to cast light
into a room where there are no windows. Fill in
flash is ideal for back-lit and side-lit situations.
In a backlit situation there will be a lot of light
in the background but no or little light cast on the
front of the subject. This would normally create
somewhat of a silhouette effect, but with a fill
flash it would balance the photo nicely. But in
order for this technique to work, you must be
careful to stay in flash range which is usually
around four to ten feet. With common cameras in
order to add fill flash to a photo just toggle the
flash to go off when it normally would not be
needed.
Other Types of Flash
Many newer cameras now have a red-eye reduction mode
where the flash may fire before the picture is taken
in order to cause the subjects’ pupils to contract.
The red-eye reduction modes in newer cameras are
surprisingly effective and many work in different
ways to contract pupils.
A
slow sync flash is for more complicated exposures
and is used commonly to create blurry long
exposures. The flash fires at the beginning of the
exposure, but the shutter still stays open for a
moment after the flash has fired. This can freeze a
car at dusk and create a blurry streak in the cars
path. Or the slow sync flash could capture a sunset
and freeze a closer subject that is moving through
the frame. There are countless situations where a
slow sync flash could possibly be used to enhance an
exposure. There are also other versions of the sync
flash such as the rear sync flash (where the flash
fires at the end of an exposure) or the stroboscopic
flash (where the flash fires multiple times
throughout an exposure).
Many photographers also choose to bounce the flash
off a wall or ceiling to get a softer diffused kind
of light commonly sought after for portraits. This
kind of flash technique requires a flash that can be
aimed in a direction that the camera is not pointed.
It takes practice to refine this technique but many
professionals come to use this method almost
exclusively.
Conclusion
Practice using flash in your photos even when it is
not necessarily needed and pay attention to your
results. The best way to become better at flash
photography is to analyze your photos and try to
figure out what you could have done differently in
order to create a better flash-filled exposure.