Canon A-1 Istruzioni per il montaggio

Canon

A-l

Repair

Guide

Introduction

April,

1976,

Canon

introduced

landmark

camera,

the

Canon

AE-l.

incorporated

very

reliable

computerized

mechanism

into

compact

body

that

can

marketed

very

competitive

price

due

revolutionary

production

techniques.

The

AE-l

has

been

huge

success

and

completely

changed

the

face

photo

hardware

marketing.

With

the

AE-l

firmly

established

the

best

selling

SLR

the

World,

design

work

progressed

versitile

ver-

sion.

This

work

now

complete

and

the

result

the

CANON

A-l,

the

Apex

the

camera

world:

the

highest

quality,

most

durable,

most

feature

laden

automatic

exposure

SLR

the

world.

The

major

goals

which

guided

the

design

the

A-l

were:

Incorporation

advanced

digital

technology

Compact,

easy-to-handle

body

Compatability

with

AE-l

system

components

Interchangeability

parts

with

AE-l

Improved

durability

Features

2.1

Five

difference

automatic

exposure

modes

Full

Aperture

TTL

Metering

Shutter

speed

priority

Aperture

priority

Programmed

Electronic

flash

TTL

Stopped-Down

Metering

Stopped-down

(regardless

the

types

lens

attached

whether

lens

attached

all).

2.2

The

employment

total

digital

system

process

with

speed

and

accuracy

all

incoming

information

After

converting

the

brightness

information

from

analog

form

into

digital

form,

digital

computation

takes

care

information

input,

calculation,

information

storage,

•

information

display

and

exposure

control.

2.3

Full

Information

Character

Display

Viewfinder

All

information

displayed

alphametricly

the

dark

area

below

the

focusing

screen

segmented

LED's

similar

those

used

digital

calculators.

Information

includes

exposure

information,

mode

information,

and

various

warn~

ings.

Although

probably

the

least

intrusive

full

information

viewfinder

ever

built,

can

turned

off

completely

eli

inate

any

distract

focusing

and

com-

position.

Even

when

turned

off,

the

camera

continues

function

normally

whichever

mode

in.

Details

are

given

later.

2.4

Expanded

Range

and

Versitility

Expanded

metering,

film

speed

and

shutter

speed

and

ex-

posure

compensation

ranges,

memory

and

multiple

exposure

increase

the

A-l's

versitility.

2.5

Essential

Controls

and

Displays

Grouped

for

Easy

Reach

and

Rapid

Operations

(1)

mode

(2)

dial

(3)

Shutter

button

lock

self-timer

lever

(4)

Viewfinder

information

displ

switch

(5)

Multiple

exposure

lever

2.6

Automatic

System

Components

Motor

Drive

MA,

Power

Winder

Data

Back

Speedlites

155A,

and

199A.

2.7

Human

Engineering,

Miscellaneous

Safety

Features:

Lock

Mechanis

Flashing

Warnings,

Energy

Conser

ing

Design

Easy

Operation:

Action

Grip,

uman

Engineering

Design,

Electro-magnetic

release

Interchangeable

Viewfinder

Screens

Easy

~ead

viewfinder

True-load

attery

checker

giv

visual

indication

remaining

battery

power

Eyepiece

Shutter

block

extraneous

light

Two

delay

self

timer

Specifications

3.1

Type:

35mm

focal

plane

shutter

single

lens

reflex

with

five

automatic

exposures

modes:

3. 2

Picture

Size:

24 x 36

rom

3.3

Interchangeable

Lenses:

3.4

Whole

series

for

five

methods

automatic

exposures;

with

series,

automatic

exposures

with

stopped-down

metering

working

apertures.

Viewfinder

(1)

(2 )

(3 )

(4 )

(5 )

Type:

Field-of-view:

Magnification:

Viewfinder

Power:

Focusing

Screens:

Fixed

eye-level

pentaprism

93.4%

vertical

and

95.3%

horizontal

0.S3X

infinity

with

rom

lens

-1.0

dpt

(same

the

AE-l)

Standard

screen

center

split-image

(2.5

rom

di-

ameter

with

prism

angle)

rangefinder

surrounded

microprism

(with

prism)

and

ground

glass/fresnel

field

for

the

remaining

portion.

, The

six

focusing

screens

for

replacement

are

split-image,

mlcroprism,

microp

j."i

for

small

aperture

lenses,

all

matte,

double

cross

hair

reticule

matte/scale.

(6)

Viewfinder

Information

Seven

segment

LED's

provide

six

variable

digits

plus

"Mil

and

decimal

paint.

Information

includes

Shutter

Speed,

Aperture,

Flash

ready

information,

Manual

indicat

and

flashing

signals,

digital

form.

The

display

can

turned

off

when

not

needed

without

affecting

the

camera

operation.

(7)

Mirror

Cut-off:

mirror

cut-off

with

telephoto

lens

long

400

lens.

(This

the

same

with

AE-l.)

(8)

Eyepiece

Shutter:

Built-in

(9)

Accessories.

Angle

Finder,

Magnifier,

Eyecup,

and

eyesight

correc-

tion

lenses.

(The same

for

the

AE-l.)

3.5

Function

(1)

Method

Electronicly

controled

automatic

exposure

setting

the

lens

the

'A'

mark,

and

selecting

the

mode

with

the

dial

relay

the

input

exposure

control

information.

(Three

LSI

with

12L,

one

linear

LSI,and

one

Bi-Hos

IC,

the

latter

for

metering

the

light,

are

used.)

(2)

Automatic

exposure

modes

Hode

Meter

Shutter

speed

Full

aperture

priority

Aperture

stop

Full

aperture

ority

Prograaaed

Full

aperture

flash

Full

aperture

Stopped-down Stopped-down

Aperture

Hode

Dial

Selector

Setting

Leos

Switch

Reading

'A'

mark.

Shutter

speed

'A'

....

Aperture

stop

mark

' A' mark

*Either

Any

apert

Either

except

'A'

*: For a

shutter

speed

1/60

slower

with

the

199A,

set

the

switch

Tv.

(3)

Light

Sensing

Element

Center-weighted

average

meter

reading

(the

same

the

AE-l)

silicon

photocell

placed

above

the

eyepiece

and

fresnel

lens

concentrate

the

incoming

light.

(4)

Meter

Coupling

Range

-2

(f/l.4

lens)

with

ASA

100

film.

The

programmed

program

shown

the

dotted

line.

8 4 2

coupling

Range

for

ASA

Film

Speeds

with

f/l.4

Lens

•

5.6

2.8

1.4

112

114

1/8

III'

1130

1160

VI25 11250

II!:IOO

1/1000

(5)

Film

Speed

Range

ASA

12,800

1/3

step

increments

(6)

Exposure

Compensation

Two

full

f/stop

plus/minus

control

with

figures

from

1/4X

and

calibrations

1/3

step

increments.

The

following

shows

the

range

exposure

variations

possible

with

the

respective

film

speed

setting:

ASA

25 -3200

ASA

6400

ASA

12800

1/4

• •

1/2

• 1

1/4

• •

1/2

• • 1 • • 2

1/4

• •

1/2

• • 1 • • 2 • • 4

1/ 2 • • 1 • • 2 • • 4

1 • • 2 • • 4

(7)

Exposure

Memory

There

a memory

lock

button

(located

where

the

exposure

compensatio

tton

the

AE-l).

While

this

button

press

exposure

reading

locked

and

you

are

your

liberty

vary

the

com-

bination

shutter

speed

and

f/stop.

(8)

Stopped-Down

Metering

Lever

The

lever

folding

type

and

lifting

the

end

and

pushing

against

the

ension

the

spring,

locked

place.

(9)

Other

Operations

The

dial

has

the

following

indications

...

-: •

• : •

o 0 0

0 0

a..

0 0

M _

II)

N _

...

•

AV.

Black

figures

the

yellow

ground

Black

the

green

base

TV:

30":

Yellow

figures

black

ground

Other

figures:

White

figures

black

ground

3.6

Power

Source

(1)

Battery

One

silver

oxide

battery

(Eveready

No.

544,

UCAR

No.

544,

JIS

4G13,

Mallory

PX28)

alkaline

man-

ganese

battery

(Eveready

NO.

537,

UCAR

No.

537)

(This

the

same

with

the

AE-l.)

(2)

Battery

Chamber

Under

the

finger

grip

the

front

the

camera

body.

(This

the

same

with

the

AE-l.)

(3) Main

Switch.

setting

the

shutter

button

lock

lever

"L",

all

the

electronic

circuits

will

turned

off.

(4)

Battery

Check

True-load

Type

The

flashing

frequency

changes

depending

the

con-

dition

the

battery,

roughly

telling

you

how

good

is.

The

slower

the

flashing

frequency,

the

weaker

the

battery.

(5)

Cancellation

the

circuit

Set

the

shutter

button

lock

lever

"L",

Press

the

battery

check

button

and

take

your

finger

off

the

button.

The

AE-l's

circuit

ncelled

the

moment

the

battery

check

button

pressed,

while

the

A-l's

circuit

cancelled

the

moment

the

finger

taken

off

the

button.

(To

precise,

the

A-l's

circuit

cancelled

when

the

battery

check

button

pressed,

but

the

battery

checker

current

thru

the

second

shutter

magnets

give

the

impression

that

the

circuit

not

cancelled.)

(6)

Battery

Life

The

battery

lasts

for

approximately

15,000

exposures

one

year

under

normal

use.

Normal

use

means

that

the

camera

used

with

shutter

speed

1/125

sec

and

that

the

digital

indications

are

lit

for

one

second

every

exposure.)

3 . 1

t t

Mechanism

(1)

Type

Dual

roller

type

cloth

focal

plane

shutter

(2)

Speed

Scale

the

dial

30,

5,8,4

2,1,2,4,8,l5,30,60,125,250,500,1000

I I I I

Yellow White

(3)

Shutter

release

button

o .

Electromagnetic

shutter

release

Large-sized

shutter

button

concentric

with

mode

selector.

(4)

Synchronization

contact

o X

synchronization

sec.

The

accessory

shoe

the

top

the

pentaprism

has

direct

flash

contact.

the

front

the

camera

body

flash

terminal,

(JIS-B

type).

Wit

built-in

electric

shock

preventive

rim.

The

accessory

shoe

has

automatic

flash

control

contacts

for

automatically

switching

shutter

spee

and

aperture.

o When

using

ordinary

flash

units

(other

than

Speedlite

155A

and

199A) ,

set

the

mode

selecto

and

set

the

tter

speed

sec

slower.

3. 8

Self-Timer

(1)

Electronically

controlled

self-ti

(2)

Operation

Set

the

self-timer

lever

either

"2"

10".

Activated

the

shutter

release

button.

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