179
Glossary
11
App
end
ix
Eclipsing (Vignetting)
This refers to when an object obscures part of the field of view so that the
whole subject is not photographed. Vignetting also refers to when the image
seen through the viewfinder does not exactly match the image shot through
the objective lens, so the photographed image includes objects not seen
through the viewfinder. In addition, vignetting can occur when an incorrect lens
hood is used, causing shadowing to appear in the corners of the image.
EV (Exposure Value)
A system for measuring exposure. EV0 is when the aperture is at F1 and the
shutter speed is 1 second. The EV 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 length of time the shutter is open (shutter speed) and the amount of light
that passes through the lens (aperture).
ISO
A method for indicating film speed by the International Organization for
Standardization (ISO) (e.g. "ISO100"). Higher ISO values indicate greater
sensitivity to light, so images can be exposed even in low-light conditions.
JPEG (Joint Photographic Experts Group)
A compression format for color still images. Photographs (images) shot using
this camera are recorded onto the card in JPEG format when the Record
mode is set to SHQ, HQ, SQ. By downloading these images to a personal
computer, users can edit them using graphics application software or view the
images using an Internet web browser.
M (Manual) Mode
The user sets both the aperture and shutter speed.
NTSC (National Television Systems Committee) / PAL (Phase Alternating
Line)
Television formats. NTSC is mainly used in Japan, North America and Korea.
PAL is mainly used in Europe and China.
Number of Pixels (PIXEL COUNT)
The number of dots (pixels) used to create an image denotes the image size.
For instance, an image in 640 x 480 resolution is the same size as the
computer screen if the monitor setting is also 640 x 480. If the monitor setting
is 1024 x 768, the image only takes up part of the screen.
s0004_e_Advanced.book Page 179 Tuesday, September 27, 2005 4:15 PM
