Pentax ZX-10 ZX-10 Manual - Page 41

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AF500FTZ

and

AF330FTZ

•

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

an

F

or

FA

lens

is

in

use.

•

The

AF500FTZ

features

a

wireless

slave

-sync

flash

function.

•

The

flash

effective

range

appears

on

the

LCD

panel

only

when

an

A,

F,

or

FA

lens

is

in

use.

•

Multiple

flash

burst

on

a

single

frame

is

possible

with

the

AF500FTZ.

•

These

flash

units

feature

the

contrast

-control

-sync

flash.

See

page

77

for

more

details.

•

In

the

Smart

Picture

Mode,

Picture

Mode,

Shutter

-

Priority

AE,

or

Aperture

-Priority

AE,

the

TTL

Auto

Flash

Mode

will

be

set

automatically

even

if

the

flash

is

set

to

the

Manual

Mode.

•

When

the

flash

is

charged

and

left

unused

for

about

3

minutes,

the

power

automatically

switches

off

to

save

battery

power.

Depressing

the

shutter

release

button

halfway

down

will

restart

charging

of

the

flash

units.

•

When

using

the

Three

-Level

Auto

(red,

green,

and

yel-

low

settings)

Mode,

the

aperture

value

is

fixed

as

shown

in

the

table.

When

the

flash

is

fully

charged,

the

shutter

speed

varies

within

the

shutter

speed

range

of

1/100

of

second

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

AF2807

AF400T

Red

f/2.8

f/4

f/4

Green

f/5.6

f/8

f/8

Yellow

f/11

with

ISO

100

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

flash

mode

is

set

for

the

dedicated

flash

unit,

the

built-in

flash

also

operates

in

the

trailing

-

shutter

-curtain

-sync

flash

mode.

Ensure

that

both

flash

units

are

fully

charged

before

releasing

the

shutter.

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

Smart

Picture

Mode,

Picture

Mode,

Shutter

-

Priority

AE,

or

Aperture

-Priority

AE.

the

TTL

Auto

Flash

Mode

will

be set

automatically

even

if

the

flash

unit

is

set

to

the

Manual

Mode.

•

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

re-

lease

button

halfway

down

will

restart

charging

of

the

flash

unit.

AF200T,

AF280T,

and

AF400T

•

If

the

TTL

Auto

Mode

is

selected,

these

flash

units

can

be

used

for

daylight

-sync

shooting,

because

the

shut-

ter

speed

is

adjusted

according

to

the

ambient

bright.

ness.

The

slower

shutter

speed

varies

according

to

the

lens

focal

length.

The

shutter

speed

varies

within

the

shutter

speed

range

of

1/100

second

to

a

slower

speed

which

does

not

cause

camera

shake.

However,

when

a

non-autofocus

lens

or

the

Action

Program

Mode

is

in

use,

the

shutter

speed

is

set

to

1

/

1

00

sec-

ond.

The

aperture

value

will

also

be

fixed

but

will

vary

depending

on

what

ISO

film

is

loaded.

Contrast

-Control

Flash

Photography

Using

the

AF330FTZ

or

AF500FTZ

in

combination

with

the

built-in

flash

allows

twin

flash

photography

(contrast

-control

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

Flash

Mode.

See

the

flash

connections

on

page

75.

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).

•

Do

not

combine

an

accessory

with

a

different

number

of

contacts

such

as

a

"Hot

Shoe

Grip"

as

a

malfunc-

tion

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

78.

The

Built-in

flash

can

be

operated

with

any

type

of

Pentax

TTL

dedicated

flash

unit.

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Pentax ZX-10 ZX-10 Manual - Page 41

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