Pentax PZ-10 PZ-10 Manual - Page 55

HARD-TO-AUTOFOCUS

SUBJECTS

13

C

Autofocus

is

an

exceptionally

high-performance

mechanism,

but

it

is

not

perfect.

Depending

on

the

subject

brightness,

contrast,

shape,

and

size,

the

focus

may

not

work

as

in

the

case

of

focusing

using

the

[

of

the

viewfinder.

Use

the

focus

-lock

technique

on

a

subject

which

is

both

near

the

actual

one

and

at

an

equal

distance

from

the

camera

or

use

the

matte

area

in

the

viewfinder

for

focusing.

Factois

that

Make

AlltOTOCUSill,E;

DOR:Lilt

1

)

Extremely

low

contrast

subjects

such

as

white

walls

in

the

AF

frame.

2

)

Subjects

which

don't

reflect

much

light

in

the

AF

frame.

3

)

Subjects

which

are

moving

too

fast.

4)

Subjects

with

horizontal

lines

or

with

finely

detailed

pat-

terns

in

the

AF

frame.

5

)

Multiple

subjects

in

the

foreground

and

background

of

the

AF

frame.

6)

Subjects

positioned

against

reflected

light,

strong

back-

light

or

on

extremely

bright

background.

Note:

For

the

situations

mentioned

above,

set

focus

mode

lever

to

MF

and

focus

manually

using

the

matte

focusing

area

surrounding

the

AF

frame.

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i

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7:

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Warnings

About

Accessories•••

The

following

conditions

do

not

allow

autofocusing

or

manual

focusing

using

the

Fl

(Focus

Indication)

system

in

the

view-

finder.

Focus

manually

using

the

matte

focusing

area

sur-

rounding

the

AF

frame.

(See

page

53.)

1

)

When

using

special

effects

filters

or

"Magic

Image

Attach-

ment"

or

"Stereo

Adapters."

2)

A

half

mirror

incorporated

into

the

autofocus

system

reduces

the

effectiveness

of

the

autofocus

when

used

with

an

ordinary

polarizing

filter.

Use

a

circular

polarizing

filter

with

autofocus.

3

)

When

using

Extension

Tubes

or

an

Auto

Bellows.

Note

on

using

the

SMC

Pentax

F

Soft

85mm

f/2.8

When

shooting

at

a

distance

less

than

approx.

1.5m,

set

the

lens

to

f/2.8

tot/4.5.1f

you

set

the

aperture

to

f/5.6

^

f/32,

camera's

autofocus

function

as

well

as

the

focus

-indication

in

the

viewfinder

may

not

operate

properly.

When

you

want

to

set

the

aperture

to

an

f/5.6

or

darker,

first

set

the

lens

to

an

f/

4.5,

focus

the

lens

on

the

subject,

lock

focus,

and

then

set

the

aperture

as

desired

to

take

a

picture.

51

Pentax PZ-10 PZ-10 Manual - Page 55

Hard-to-autofocus, Subjects

Page 55 highlights