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PORST AEC- Controller

AEC Controller

Hersteller/Manufacturer:

Cosina

Baujahr von/bis/ year from/to

ab ?

Preis ca. / price approx.

DM 119,- in 1979

Kadlubek Nr.

k.A.

Anbaugerät für compact reflex Serie, das aus der Kamera einen Belichtungsautomaten mit Blendenvorwahl macht

Accessory for compact reflex series, adding automatic exposure (aperture priority) to the camera camera

Der AEC-Controller
Mit diesem Zusatzcomputer wird automatisch zur vorgewählten Blende stufenlos die richtige Verschlußzeit gewählt. Nur auf Blitzschuh schieben, Kabel anstecken, Auslöser bis zum Druckpunkt betätigen, der AEC-Controller gibt grünes Licht zum Fotografieren, nachdem er die Belichtungszeit eingestellt hat.

Batterie: Toshiba 4G13 type 6V silver oxide

The AEC-ControllerThis accessory computer automatically selects the right exposure time, based on the chosen aperture. Simply slide into the accessory shoe, plug in the cable, press the shutter-release until the pressure point. The AEC controller gives green light after having automatically set the correct exposure time-



A. Specifications:

System

Aperture-preferred Automatic Exposure Control adapter.

Battery

Toshiba 4G13 type 6V silver oxide battery

Operating range

EV4 (F1.4 1/8)--EV18 (F16 1/1000) with ASA100.

EE operating diagram:

F1.4 EV 4- 11
F5.6 EV 8 -- 15
F16 EV 11 - 18 (in case film speed is ASA 100)




B. Procedure of use:

1. Insert the battery to the battery compartment (+ side face up).

2. 1-urn the speed deal of AEC adapter until the engraving of 1000 comes to the white indication.

3. Set the speed dial of camera at 1000.

4. Pull Up the cock which lies on the top face of the adapter.

5. Insert the adapter to the accessory shoe of camera.

6. Lay down the cock as previously positioned.

7. Engage the pin of speed dial of camera with the slot of speed dial of adapter.

8. Fix the adapter by turning the lock-dial clockwise.

9. Insert the plug to the socket.

C. Operation:


1. Advance the film.

2. Set the camera to the object Which you want to take picture of, and press the release button half
way down.

3. Then, immediately the meter circuit is powered and one of the LEDs in the viewfinder will light. At the same time, the motor of adapter starts running. It runs just until the center positioned green LED lights and stops.

4. When the green LED lights, it means that the exposure condition is correct. Now, you can press the shutter release button all way down

5. When either --> + or <-- (-) red LED light and the motor keeps running, you should rotate the diaphragm ring and choose another F-stop until green LED lights.

6. When red LED --> + lights it means overexposure, so you should rotate the diaphragm ring to (right), in other words, to smaller aperture.

7. When red LED <-- lights, it means underexposure, so you should rotate the diaphragm ring to (left), to other words, to bigger aperture.

8. If the green LED * does not light though you have already set to maximum aperture, it is out of EE range. It is the same mean, if the both red LEDs fight at the same time.

quoted from Mike Butkus - see below

Quelle: Katalog Porst Fotografieren und Filmen 1979

Mike Butkus: http://www.butkus.org/chinon/cosina/cosina_csm/cosina_csm.htm