AGFA Automatic 66 Manuale utente

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1

INSTRUCTIONS FOR USE

Please fold this page open!

3

Fig. 1

2

DESCRIPTION OF THE INDIVIDUAL PARTS

(1) Baseboard Release Button

(2) Film Transport Knob with Built-in Film

Indicator

(3) Adjustment Disc for Setting the Film

Speed (DIN or ASA Scale)

(4) Adjustment Disc for Activating the

Automatic Mechanism. In the Picture

Green Dot next to A= Automatic

Mechanism Switched On.

(5) Red Marker for Switching Off the

Automatic Mechanism

(6) Exposure Time Setting Ring for

Automatic Mechanism: Green Anext

to Green Marker

See Page 6 for the Quick Start Guide!

(7) Moving Pointer of the Exposure Meter

above the Shutter Speed Display

(8) Diaphragm Setting Ring with Click

Stops

(9) Shutter Winding Lever, push down

towards Baseboard Floor

(1) Shutter Release button with Threaded

Cable Release

(2) Frame Counter Window

(3) Focusing Lever

(4) Flash Contact

1

2

3

4

5

6

7

8

9

10

11

12

13

3

The principle of the Agfa Automatic 66

With the Agfa Automatic 66 we are giving you a camera that, for the first time, uses a

built-in exposure meter to regulate the shutter speed fully automatically.

It should be expressly pointed out that working with the camera does not require any

knowledge of the function of the automatic mechanism. If we nevertheless give a brief

explanation of its operation, it is not least because of the lively technical interest shown

in this new feature.

It can be assumed as known that light meters use light-sensitive photoelectric cells, which

show the amount of light hitting the cell converted into exposure and diaphragm values

via a galvanometer by means of corresponding needle deflections.

With the construction of the Agfa Automatic, it has been possible to make this needle

deflection the starting point for automatic shutter speed control. The process now taking

place can be compared with the mode of operation of an air pump, the air inlet

opening of which is adjustable and the piston of which is under spring tension. At the

4

moment of releasing the shutter, the needle deflection is locked and at the same time

regulates the air flowing into a cylinder.

With a small needle deflection, the air inlet will be small and cause a delay in the

closing process; If the needle deflects further, the air inlet is enlarged and a rapid closure

process takes place accordingly. By ingeniously transferring the spring tension of the

shutter to the pneumatic system, we obtain the necessary mechanical force on the one

hand, but on the other also automatically the precisely timed opening of the shutter, as

it corresponds to the measured light conditions of the subject.

In addition to this shutter speed control, two more factors need to be taken into

account: the position of the diaphragm and the sensitivity of the film material used.

The choice of diaphragm has to be left to the photographer, because depending on the

object, he wants to influence the depth of field, for example. An array of finely tuned

resistors is connected to the photocell circuit and is activated by turning the diaphragm

ring. A look into the window of the instrument needle shows that the expected exposure

time can be changed by adjusting the diaphragm. So, for example, with moving objects

you have the possibility to regulate the exposure time accordingly.

The sensitivity of the film material is set on the top of the camera; by turning the

adjusting knob, a blind in front of the photocell is adjusted, which influences the sensitivity

of the light meter.

5

The automatic exposure time controller in the Automatic 66 was developed by Agfa

Camera-Werk according to patent DBP 923525. A number of individual well-known

principles have been combined into an ingenious construction in such a way that we

have come another step closer to the goal of simplifying photography.

ABOUT THIS INSTRUCTION MANUAL:

In the instructions below for operating the automatic mechanism, we first describe the

individual steps for inserting and removing the film, as well as operating the shutter if it is

to be used without the automatic regulation. This is primarily the case for flash

photography. Other special cases in which the automatic mechanism is not to be used is

described on page 20. We also give you a quick start guide that you can use if you are

already familiar with the handling of the camera. In any case, please fold out the main

illustration on the first cover page, as we refer to this illustration in the text by its

individual numbers.

6

QUICK START GUIDE

1. Film insertion. 8-11

2. Set the type of film on the film indicator (2) 7

3. Set automation (4), set green point next to green A. 18

4. Set the ASA scale (3), set the black triangle to the

desired sensitivity of the film.

18

5. Set the locking ring (6) to the shortest possible

exposure time, the green point next to the green A.

18

6. Aim at the object, note the scale (7) of the exposure

meter, if necessary adjust the diaphragm (8).

19

7. Set the focus distance using the range-finder, move

the focusing lever (12) until the central range-finding

image coincides with the viewfinder image.

16/17

8. Tension the shutter winding lever (9) and push the

release button (10).

14

9. Turn the film transport knob (20) as far as it will go,

the next film frame number will then appear in the

frame counter window (11).

12

Important

until the first

shot!

Important for

each

subsequent

shot!

Detailed

description

on page

7

FILM INDICATOR

This device is meant to be a memory aid to enable you to remember at any time the

kind of film with which your camera happens to be loaded. You should therefore make it

a rule to set it immediately after the insertion of a film.

The ASA number or the type of colour film can be found on the film packaging.

Types of film indicated:

12, 32, 80, 125 ASA

Col RD Colour Reversal film, Daylight

Col RT Colour Reversal film, Tungsten (artificial light)

Col ND Colour Negative film, Daylight

Col NT Colour Negative film, Tungsten (artificial light)

Col CN 17 Colour Negative film for Daylight and Tungsten, universal film for colour

and black and white

Setting: The spring-loaded disc on top of the film transport knob (2) is depressed and

rotated against the direction of the arrow until the desired mark is visible in the window,

then it is released again.

8

FILM LOADING

OPENING THE CAMERA

BACK

Lateral displacement of the

small locking lever unlocks the

back of the Automatic 66,

which can now be fully opened

(Fig. 2).

FILM INSERTION

First, the lower spool peg is pulled out by turning the knurled disc to the left (Fig. 3). The

standard 120 rollfilm is unwrapped, preferably in subdued light, and the adhesive tape

removed; the hand should grip the backing paper of the film firmly right up to the

insertion to prevent uncoiling.

Fig. 2