Pentax Spotmatic Spotmatic Manual - Page 15

Shutter

Turn

the

shutter

speed

dial

clock-

wise

or

counter

-clockwise

to

the

shutter

speed

desired.

The

shutter

speed

may

be

set

either

before

or

after

cocking

the

rapid

wind

lever.

As

you

cock

the

shutter

by

turning

the

rapid

wind

lever,

the

"cocked"

indicator

turns

to

red

showing

that

the

shutter

is

cocked.

The

indicator

window

blacks

out

as

you

trip

the

shutter

button.

For

use

of

the

X

setting

on

the

shutter

speed

dial,

refer

to

page

17.

With

the

shutter

speed dial

set

on

B

(bulb),

the

shutter

will

stay

open

as

long

as

you

depress

the

shutter

button.

As

you

release

your

finger

from

the

shutter

button,

the

shutter

closes.

When

a

long

exposure

is

desired

while

using

the

B

setting,

attach

a

shutter

release

cable

with

a

locking

device

to

the

shutter

button.

This

will

permit

a

"Time"

exposure.

Cautions

1

At

slow

speeds

-slower

than

1/30

—

support

your

camera

rigidly

or

use

a

tripod

to

prevent

movement

of

your

camera.

2

To

protect

the

shutter

mechan-

ism,

trip

the

shutter

release

be-

fore

putting

the

camera

out

of

use

for

any

extended

period.

If

you

want

to

know

how

great

the

depth

of

field

is

at

a

certain

aper-

ture,

look

at

the

depth

-of

-field

guide.

In

the

above

photograph,

the

distance

scale

is

set

at

15

feet

..

.

the

lens

is

focused

on

a

subject

15

feet

away.

The

calibrations

on

each

side

of

the

distance

index

correspond

to

the

diaphragm

setting

and

indicate

the

range

of

in

-focus

distance

for

differ-

ent

lens

apertures.

For

example,

if

the

lens

opening

of

f/8

is

to

be

used,

Depth

-of

-field

guide

the

range

on

the

distance

scale

ring

covered

within

the

figure

8

on

the

depth

-of

-field

guide

indicates

the

area

in

focus

at

the

lens

opening.

You

will

note

from

the

depth

-of

-field

guide

in

the

photograph

that

the

range

from

approximately

10

to

25

feet

is

in

focus.

Note

that

as

the

lens

apertures

change,

the

effective

depth

of

field

also

changes.

For

the

depth

of

fields

at

different

apertures

and

distances,

refer

to

page

14.

[

Depth

of

field

is

the

range

between

the

nearest

and

farthest

distances

which

are

in

focus

at

different

lens

apertures.

13

Pentax Spotmatic Spotmatic Manual - Page 15

Shutter

Page 15 highlights