Nikon N4004s User Manual
Page 76
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TTL:
Abbreviation of Through-The-Lens, Most SLR cameras
have built-in meters which measure light after it has passed
through the lens, a feature that enables exposure readings to
be taken from fhe actual image about to be recorded on film,
whatever the lens’ angle of view and regardless of whether
a filter is used.
TTL auto flash mode:
In this mode, the camera’s light sensor
measures flash light, as reflected by the subject on the film, and
shuts off the flash when measurement indicates correct expo
sure. Because the sensor that controls the flash receives lighf
through the lens, this mode can be used for bounce photography,
fill-in flash, multiple flash photography, etc. The major advantage
of this mode is that you can use a wide range of aperture
settings that will give correct exposure.
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