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Electronic flash with Graphlex Optar

Frank Dineen , Jan 24, 2008; 11:36 a.m.

I have a f4.5 135mm optar lens with two pin flash connection. How do I adapt this for a modern electronic flash unit?



Paul Emerson , Jan 24, 2008; 11:57 a.m.

Get a bipost sync cable. Get a bipost sync cable. Paramount Cords has them.

Bob Salomon , Jan 24, 2008; 01:13 p.m.

An electric shaver cord or a TV cheater cord has the same posts. But is your shutter X or M or both for synch?

Alan Davenport , Jan 24, 2008; 02:09 p.m.

You need X sync for electronic flash. If your shutter has only M sync, it will fire before the shutter is fully open.

Once you have the right connector for the bipole, you can buy adapters or just cobble the ends of two cords together; there're no fancy electronics involved. If you roll your own, be sure to insulate all the connections; the voltages that some flashes put onto the sync cord can be impressive...

Michael Gilday , Jan 24, 2008; 02:59 p.m.

*Every* old press-camera shutter I've ever come across will do X-sync, if it does any sort of sync at all. (The focal-plane shutter on a Speed Graphic, obviously, being an exception.) If, as I suspect, yours is a 1-1/400 Graphex shutter with a bix "(X)" on it - an 'X' in parentheses - then it *only* does X-sync, and you've no worries. Otherwise, you get X sync by setting it to 'M', and not cocking the synchronizer. Easy. :)

Michael Briggs , Jan 24, 2008; 05:36 p.m.

See "kodak ektar bipost question" from earlier in this month, at http://photo.net/bboard/q-and-a-fetch-msg?msg_id=00NrMZ

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