Pentax 540FGZ - AF - Hot-shoe clip-on Flash Operating Manual page 33

5
Confirm that the subject is within the effective
flash range and the ready lamp is lit. Then take a
picture.
● In the following cameras, if the correct flash
output is obtained, the flash mode indicator and
( ) in the viewfinder will blink.
645, LX, MZ-M/ZX-M
For details, refer to "Auto Check Display" on
page 11.
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