Nikon SB-80DX - Manual (Page 27)

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Basic operation
metering system
l
Exposure modes other than Programmed Auto exposure (P)
In Shutter-Priority Auto exposure (S) mode
m By selecting a slower shutter speed, the proper exposure for the background
can be achieved.
nThe camera selects the correct aperture. Set the shutter speed on the camera after
confirming that the automatically controlled aperture will provide an appropriate shooting
distance range for your subject. Refer to “Flash shooting distance range in the TTL/D-TTL
auto flash modes” (p. 29).
nIf you set a shutter speed faster than the flash sync speed, the camera automatically
shifts to its fastest sync speed when the SB-80DX is turned on.
In Aperture-Priority Auto exposure (A) mode
m By selecting the aperture, you can control depth of field and the flash
shooting distance range.
nThe camera selects the correct shutter speed. For detains, see your camera’s instruction
manual.
nTo determine the aperture, refer to the guide number (p. 45) and the “Flash shooting
distance range in the TTL/D-TTL auto flash modes” (p. 29).
In Manual exposure (M) mode
m By selecting the shutter speed and aperture, you can control the exposure of
the background, the depth of field, and flash shooting distance range.
nIf you set a shutter speed faster than the flash sync speed, the camera automatically
shifts to its fastest sync speed when the SB-80DX is turned on. This is true of all cameras,
except mechanical shutter cameras.
nTo determine the aperture, refer to the “Guide number” (p. 45) and the “Flash shooting
distance range in the TTL/D-TTL auto flash modes” (p. 29).