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Additional Support Information
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Additional Support Information > Using Flash to Avoid Shadows and Underexposed Pictures
Using Flash to Avoid Underexposed Photographs
and Shadows
Contents
Underexposure
The most common cause of poor picture quality is underexposure.
Underexposure occurs when inadequate light reaches the film, resulting
in a thin negative, a dark slide, or a muddy print. Adequate light
is necessary for proper exposure regardless of the film speed.
Film requires considerable light for proper exposure -- more
light than is typically available inside a house or a building.
A flash approximates sunlight and provides a normal color balance.
To minimize underexposure:
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Use flash when shooting in low-light
situations, for example:
-
Make sure the subject that you want to photograph is within
your camera's flash range. Subjects beyond the flash range
will not be properly illuminated, resulting in underexposed negatives
and prints that look grainy, dark, or even unprintable.
Note:
-
Pictures taken indoors without adequate
flash will take on the color of the existing light source.
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Most homes have incandescent lighting so photographs taken
without a flash will have a gold or yellow bias.
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Most public buildings use commercial lighting which contains
unnatural colors. Photographs taken without a flash will not provide
true-color image quality.
Shadows
Background shadows are a natural and unavoidable condition of
single-flash photographs. The shadow location depends on the orientation
between the flash and the camera lens.
To minimize shadows:
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If you want to take a vertical picture,
hold the camera so the flash is at the top. If you hold the camera
with the flash at the bottom, the shadow may appear above the subject
and be quite noticeable. Refer to your camera manual for recommendations
on how to hold the camera for horizontal and vertical pictures.
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Position yourself at eye level with the subject being photographed.
Shadows will be less noticeable at eye level than if you aim the
camera at an upward angle. If you cannot be at eye level, aim the
camera downward rather than upward.
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Avoid photographing subjects that are close to walls, particularly
blank walls. Wallpaper with a pattern or design minimizes shadows.
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Turn on all room lights, even during the daytime. A high
ambient (surrounding) light level minimizes shadows.
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Use fill flash to provide just enough flash to illuminate
areas of a picture that would otherwise be too dark. Fill flash is
available on most camera models and is helpful in the following
situations:
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For sunny day portraits: to fill in
dark shadows under the eyes, nose, or under the rim of a baseball
hat.
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To correct difficult lighting situations: dark complexions
on a beach, or a child playing in the snow.
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To balance the scene in back-lit or side-lit pictures:
subject standing in front of a window during daylight hours. In
this example of a back-lit scene, there may be sufficient background
bright area to provide an 'average' brightness
for the entire picture, but the subject is left in the dark. Fill
flash balances the scene so the subject is properly exposed, and
the background is unaffected.
General flash tips
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Do not cover the flash with your finger
when taking pictures. Blocking the flash reduces the amount of light illuminating
your scene.
-
Make sure the flash is fully charged before taking
each picture. To achieve maximum flash output,
wait several seconds after the flash ready light glows before depressing
the shutter release button.
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When holding your camera vertically, make sure the flash
is on top.
-
Protect the camera from impact. If the camera is dropped
or knocked against a hard surface, internal parts can be damaged
causing camera failure.
TIB6005
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