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Mode Dial Functions
Using the mode dial located on the rear side of the AF200FG, you can set the following flash modes.
Auto flash mode (P-TTL Auto/ TTL Auto)
When the mode dial is set to (AUTO), (–0.5), or (–1),
the operating mode of the flash unit is automatically
switched to P-TTL Auto or TTL Auto by communicating
with the camera you use.
P-TTL Auto flash
A pre-flash is discharged before the main flash so that the
metering sensor in the camera can measure the condition
of the subject and adjust the output of the main flash
properly. This mode gives more accurate results than the
conventional TTL mode.
TTL Auto flash
The metering sensor in the camera measures the amount
of light coming through the lens and adjusts the flash
output properly.
Manual flash mode (full output)
When the mode dial is set to (FULL), the flash unit
always discharges at its full output regardless of the
ambient light condition.
Determine the Guide No. of the flash unit based on the
ISO sensitivity setting of the camera, then calculate the
aperture value according to the flash range.
This mode is available on all the cameras for which you
can set the desired aperture.
00_AF200FGZ.book Page 10 Tuesday, June 19, 2007 1:42 PM