Agfa Optima 200 Sensor Demolition (28)
Agfa Optima 200 Sensor (second version).
German viewfinder camera produced c.1969.
.
So this is how the Exposure Value is automaticly determined on this camera.
The amount of light on the Selenium Cell drives the Meter. Right after pressing the Shutter Release Button the Needle of the Meter is clamped in a Stepped Trap.
The amount of degrees the Stepped Trap has to rotate before it clamps the Needle determines the Exposure Value for the interface to the Shutter.
btw That headpin is my own idea to set the Needle as the Selenium Cell did not work anymore.
.
.
.
WARNING :
This image is intended as a reference for the more experienced camera service man. If you have no experience in camera repair please do yourself a favor and send your camera to a professional service shop. It would be a pity to lose a vintage camera in a failed repair attempt !
Agfa Optima 200 Sensor Demolition (28)
Agfa Optima 200 Sensor (second version).
German viewfinder camera produced c.1969.
.
So this is how the Exposure Value is automaticly determined on this camera.
The amount of light on the Selenium Cell drives the Meter. Right after pressing the Shutter Release Button the Needle of the Meter is clamped in a Stepped Trap.
The amount of degrees the Stepped Trap has to rotate before it clamps the Needle determines the Exposure Value for the interface to the Shutter.
btw That headpin is my own idea to set the Needle as the Selenium Cell did not work anymore.
.
.
.
WARNING :
This image is intended as a reference for the more experienced camera service man. If you have no experience in camera repair please do yourself a favor and send your camera to a professional service shop. It would be a pity to lose a vintage camera in a failed repair attempt !