Apertures-Contaflex
Apertures-Contaflex
Hi Roberto,
think I can help You regaining the lost apertures 11-22.
Presupposition is, that the causal parts of the mechanisms are not sticky/gummed-up too much.
The first three pictures are for Your understanding, only the last one is important for you.
First picture shows Contaflex I after removing the lens/shutter-unit. Second picture the steering mechanisms for the aperture activitys. The third one the aperture operation-ring on the backside of the shutter/lens-unit.
Now in medias res:
When the shutter is cocked, the aperture is full open, independently which aperture is set on the camera. When You release the shutter, - among other things ;-) the aperture will stop down to the preselected setting.
This is managed by back-turning of the aperture-ring inside the body to the pre-setted aperture, say f 22 for instance.
This movement is driven by the spring-loaded wheel seen on the bottom right corner (pictures 1 & 2)
If this spring has not enough tension, this movement stops at -in Your case- f 8.
You can increase this tension very easy by turning the star-shaped wheel in the film-chamber (picture 4):
Set the aperture on camera to 22.
Loosen the fixing-screw and hold the tension-wheel thight to prevent that it runs back by itself.
Now turn the wheel counterclockwise - You will notice, that tension is increasing and You´ll see that the aperture is closing more and more until f 22 is reached.
For safety, turn a little bit more, fix with screw - and enjoy Your full range of apertures!
Don´t overact - from unbended state to right tension are aproximately 1,5 to 2,5 turns!
Hope, this long description in my circumstantial school-English will help You.
Good speed (aperture) and
Best Regards
Peter