Canon T 90 User Manual

Page 158

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A-TTL Mode

This mode automatically responds to a wide

range of illuminations from dark surroundings

to bright, so automatic fill-in flash is possible.

Using the TTL control system, this mode mea

sures the light reflected from the film surface

directly by the sensor inside the camera. In
cases such as fill-in flash photography, this A

(Advanced)-TTL mode balances the expo

sure level between the main subject and the

background to prevent unnatural effects.