Pentax 645N2 Operating Manual page 71

AF500FTZ, AF330FTZ and AF360FGZ
• These flash units feature a built-in infrared spotbeam to
assist the autofocus system in dim light and low-contrast
conditions.
• The auto zoom function will automatically adjust the
angle of discharge according to the lens focal length only
when a 645 FA lens is in use.
• The AF500FTZ and AF360FGZ feature a wireless slave-
sync flash function.
• The flash effective range appears on the LCD panel only
when an a 645 A- lens is in use, or FA lens is in use.
• Multiple flash burst on a single frame are possible with
the AF500FTZ.
• In the Programmed AE, Shutter-Priority AE, or Aperture-
Priority AE, the TTL Auto Flash Mode will be set auto-
matically even if the flash is set to Manual.
• With AF360FGZ, the picture format size can be selected
depending on the camera format being used.
AF240FT, AF400FTZ
• These flash units feature a built-in infrared spotbeam to
assist the autofocus system in dim light and low-contrast
conditions.
• In the Programmed AE, Shutter-Priority AE, or Aperture-
Priority AE: TTL Auto Flash Mode will be set automati-
cally even if the flash unit is set to Manual.
• When the flash unit is charged and left unused for about
5 minutes, the power will automatically switch off to save
battery power. Depressing the shutter release button
halfway down will restart charging of the flash unit.
AF200T, AF220T, AF280T, and AF400T
• If the TTL auto mode is selected, these flash units can
be used for daylight-sync shooting, because the shutter
speed is adjusted according to the ambient brightness.
The slower shutter speed varies according to the lens
focal length. The shutter speed varies within the shutter
speed range of 1/60 of second to a slower speed which
does not cause camera shake. However, when a 645 A-
lens is in use, the shutter speed is set to 1/60 of second.
The aperture value will also be fixed but will vary
depending on what ISO film is loaded.
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