Contrast-Control-Sync Flash Photography - Pentax ZX-5 Operating Manual

• When using the Three-Level Auto (red, green, and yel¬
low settings) mode, the aperture value is adjusted as
shown in the table. When the flash is fully charged,
the shutter speed also varies within the shutter speed
range of 1/100 to a slower speed which does not
cause camera shake. The slowest shutter speed varies
according to the lens focal length. When a non¬
autofocus lens is in use, the shutter speed will be set
to 1 /100 of second.
AF200T
AF280T
AF400T
Red
f/2.8
f/4
f/4
Green
f/5.6
f/8
f/8
Yellow
f/11
with IS0100
Notes on Pentax dedicated flash units
When the built-in flash is used in combination with a
Pentax dedicated flash unit, if the trailing-shutter-
curtain sync mode is set for the dedicated flash unit, the
built- in flash also operates in the trailing-shutter curtain
sync. mode. Ensure that both flash units are fully
charged before releasing the shutter.
Contrast-Control-Sync Flash Photography
Using the AF330FTZ or AF500FTZ in combination with
the built-in flash allows twin flash photography
(contrast-control-sync flash photography). This is
based on the difference between the amount of light
discharged from two units.
1 Put the AF500FTZ or AF330FTZ in the Contrast-
Control Sync Flash Mode.
2. Ensure that both flash units are fully charged and
then shoot.
• The ratio of the amount of flash light is 1 (built-in
flash) : 2 (dedicated flash unit). When the AF500FTZ
or AF330FTZ is used off the camera, the effect of
contrast control is increased. Do not combine an ac¬
cessory with a different number of contacts such as a
"Hot Shoe Grip" as a malfunction may occur.
• In the Contrast-Control-Sync Flash Mode, the top
flash sync speed is 1 /60 of second.
Multi-burst flash with the Pentax dedicated flash
When discharging more than 2 Pentax dedicated
flashes, make sure that they are of the same type, com¬
bine the Type B with Type C or Type D with Type E.
(refer to the overview of Flash Function on page 79.
The Built-In flash can be operated with any type of
Pentax TTL dedicated flash unit.