Pentax 500FTZ Operation Manual - Page 28

SLAVE

FLASH

FUNCTION

.

•

.

The

AF500FTZ

comes

equipped

with

a

slave

function

which

allows

for

wireless

discharge

of

the

flash

in

sync

with

either

the

camera's

built-in

flash

or

an

external

flash

attached

to

the

camera.

Use

this

function

when

you

wish

to

change

the

angle

of

discharge

including

when

the

main

flash

light

is

discharged

over

the

subject.

•

When

used

as

a

slave

unit,

the

flash

unit

only

works

in

the

manual

flash

mode.

Procedure

1.

Set

the

flash's

main

switch

to

[SL]

.

[M1

/xx]

and

[SL]

are

displayed

on

the

LCD

panel.

•

By

depressing

the

ADJUST

button,

the

flash

output

intensity

can

be

sex

between

1/1

to

1

/32.

Adjust

the

flash

output

intensity

depend-

ing

on

your

requirements.

2.

Adjust

the

zooming

position

according

to

your

requirements

and

place

the

flash

unit,

consider-

ing

the

angle

of

discharge

to

the

subject.

26

•

When

the

flash

is

used

off

-camera,

ensure

the

flash

signal

contacts

are

not

short-circuited,

due

to

contact

with

a

metallic

object:

otherwise,

the

flash

unit

will

not

function

properly.

3.

Find

the

guide

number

listed

in

the

"Table

of

Guide

Number"

on

page

16.

Then,

calculate

the

aperture

based

on

the

flash

-to

-subject

distance.

Example:

With

the

zoom

position

at

28mm,

flash

-to

-subject

distance

4m

and

the

film

speed

lSO100

©

Find

the

guide

number

32

from

the

"Table

of

Guide

Numbers",

when

the

flash

output

intensity

is

1/1.

®

32

(guide

number)

divided

by

4

(flash

-to

-

subject

distance)

gives

8

(aperture).

4.

Set

the

lens

to

the

calculated

f-stop.

5.

Set

the

shutter

speed

to

the

flash

-sync

-speed

or

slower.

6.

Make

sure

that

the

flash

Ready

lamp

on

the

AF500FTZ

is

lit

and

the

flash

unit

mounted

on

the

camera/the

built-in

flash

is

charged

before

discharging

the

flash

unit.

ti

•

C

Pentax 500FTZ Operation Manual - Page 28

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