Olympus E-500 - Manual (Page 181)

181
Glossary
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Spot metering
The meter reading is taken from a very small area around the center of the
subject, defined by the spot metering area mark in the viewfinder. Spot
metering is ideal for use in difficult light conditions, or when the important
element of the picture (subject's face) is small. Use spot metering for backlit
subjects, or sports and stage performers. See also digital ESP metering and
center weighted averaging metering.
TIFF (Tagged Image File Format)
A format used for saving highly detailed black and white or color image data.
TIFF image files can be handled by software programs for scanners and
graphics applications. Non-compressed image data are stored in this format
with this camera.
TFT (Thin-Film Transistor) Color Monitor
A color monitor constructed using thin-film technology.
TTL phase-contrast detection system
This is used to measure the distance to the subject. The camera determines if
the image is focused by the detected phase contrast.
TTL (Through-The-Lens) System
To help adjust exposure, a light receptor built into the camera directly
measures the light passing through the lens.