Olympus D-510 Zoom D-510 Zoom Instruction Manual - Page 158

Glossary of Terms

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Glossary of Terms Aperture This is a mechanism for adjusting the amount of light that passes through the lens. Lower values allow more light to pass, while higher values lessen the amount of light. Backlight A light source that is behind the subject. CCD (Charge-coupled Device) A pickup element that converts light passing through the lens into electrical signals. On this camera, light is picked up at 2.11 million points and converted to RGB signals to build a single image. Contrast Detection Auto-Focus This is a method used to measure the distance to the subject. The camera determines whether the image is focused by detecting the level of contrast in the subject. Conventional Photograph This refers to the system of recording images using silver halide. (This is the method for recording images on film in conventional, non-digital photography.) This system is in contrast to still video and digital photography. DCF (Design rule for Camera File system) A standard formulated for image files by the Japanese Electronic Industry Development Association (JEIDA). Digital ESP (Electro-Selective Pattern) light metering A light metering method that determines the exposure by metering and calculating the light levels in the center and around the periphery of the image separately. DPOF (Digital Print Order Format) A format used for recording automatic print settings for digital cameras. By recording which images are to be printed the user can automatically have the desired images printed by a printer or print lab that supports the DPOF format. Eclipsing (Vignetting) This refers to the situation where there is an object that obscures part of the field of view so that part of the subject is not photographed. Vignetting also refers to the situation where the image seen through the viewfinder does not exactly match the image shot through the objective lens so that the photographed image includes objects not seen through the viewfinder. Vignetting can also occur when the incorrect lens hood is used and shadowing appears in the corners of the image. EV (Exposure Value) An exposure measurement system in which the exposure for an aperture of F1and a shutter speed of 1 second is taken as EV0. The EV value then increases by 1 each time the aperture increases by one F stop or the shutter speed increases by one increment. EV can also be used to indicate brightness and ISO settings. Exposure The amount of light used to capture an image. The exposure is determined by the time for which the shutter is open (shutter speed) and the amount of light that passes through the lens (aperture). 148

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Glossary of Terms
148
Aperture
This is a mechanism for adjusting the
amount of light that passes through the
lens. Lower values allow more light to
pass, while higher values lessen the
amount of light.
Backlight
A light source that is behind the
subject.
CCD (Charge-coupled Device)
A pickup element that converts light
passing through the lens into electrical
signals. On this camera, light is picked
up at 2.11 million points and converted
to RGB signals to build a single image.
Contrast Detection Auto-Focus
This is a method used to measure the
distance to the subject. The camera
determines whether the image is
focused by detecting the level of
contrast in the subject.
Conventional Photograph
This refers to the system of recording
images using silver halide. (This is the
method for recording images on film in
conventional, non-digital photography.)
This system is in contrast to still video
and digital photography.
DCF (Design rule for Camera File
system)
A standard formulated for image files
by the Japanese Electronic Industry
Development Association (JEIDA).
Digital ESP (Electro-Selective
Pattern) light metering
A light metering method that
determines the exposure by metering
and calculating the light levels in the
center and around the periphery of the
image separately.
DPOF (Digital Print Order Format)
A format used for recording automatic
print settings for digital cameras. By
recording which images are to be
printed the user can automatically have
the desired images printed by a printer
or print lab that supports the DPOF
format.
Eclipsing (Vignetting)
This refers to the situation where there
is an object that obscures part of the
field of view so that part of the subject
is not photographed. Vignetting also
refers to the situation where the image
seen through the viewfinder does not
exactly match the image shot through
the objective lens so that the
photographed image includes objects
not seen through the viewfinder.
Vignetting can also occur when the
incorrect lens hood is used and
shadowing appears in the corners of
the image.
EV (Exposure Value)
An exposure measurement system in
which the exposure for an aperture of
F1and a shutter speed of 1 second is
taken as EV0. The EV value then
increases by 1 each time the aperture
increases by one F stop or the shutter
speed increases by one increment. EV
can also be used to indicate brightness
and ISO settings.
Exposure
The amount of light used to capture an
image. The exposure is determined by
the time for which the shutter is open
(shutter speed) and the amount of light
that passes through the lens
(aperture).