Tolerances of PC-sockets (turned out not to be a PC at all...)

[AgX]

I knew there were but just now I got two extremes together.

I just brought home another new old camera. At closer inspection I wondered about the thick outer-contact tube at the upper socket.
Also the socket is not screwed in as such, as with the lower one, but fastened by means of a retaining ring.
First I thought someone had exchanged that socket at that heavily battered camera and had nothing better at hand, but now I see at this sample on the net the same weird socket combination...

Problem is once pushed far onto such "wide" tube the female part of the plug will likely not sprong back when taken off and cause contact trouble when used one "thin" tube again.

 

[Prof_Pixel]

It might not be a PC flash contact. Can you find a camera manual on the Internet to check?

See http://www.jollinger.com/photo/articles/flash-connectors.html for some possibilities

 

[AgX]

It is likely a socket to synchronize for an incandescant flash. The lower socket is designated "X", the upper socket "A".

 

[AgX]

Found the manual:

"AEC-terminal"

Thank You, for that hint! It is NOT a synchro socket, but for the accessory autoexposure unit.

This also explains why there is a tiny, hardly visible isolating ring between socket and body. You do not find that at PC sockets.


Well, maybe I should read manuals before putting up strange topics...
I thought about it being a different kind of PC socket, but I knew there only is one (except for an arresting feature). And I wondered about that "A", but did not think of anything "auto-", rather of a strange designation for bulb flashes.

 

[Prof_Pixel]

Glad you found the manual!

 

[Sirius Glass]

It looks like you got RTFM'd.

 

[AgX]

I never buy new stuff, thus typically do not get a manual.
And in this case I thought to be wise enough...
And to be fair to myself, in the original both sockets really look quite alike.

Likely it's also a case of neglecting DNPBT.

 

[Sirius Glass]

Please define DNPBT

 

[AgX]

"Do not post before thinking"

 

[Sirius Glass]

DNPBT = "Do not post before thinking" What and taking all the fun out of the internet?

 

[Fujicaman1957]

It's simple..he has one of the Vivitar XC series of M42 mount cameras-the XC-2,XC-3 or the XC-4. They had a add-on auto exposure unit that went in the hot shoe and turned the shutter speed dial.

 

[AgX]

The origin of mine is the Cosina CSR and it is dressed as Porst Compact Reflex SP.

Likely that Vivitar is just another dress...