THE HACKER'S GUIDE TO THE SX-70

Some of my older articles from the old server:

Replacing a broken door latch in a SX-70
Using the flash from a 636 on a Sonar SX-70
On Blend film
Hoovercam - Large Format the cheap way
Safely connect Nikon 950, 990, 995 to third party strobes
Controller for Melles Griot electronic shutters
Mabual shutter controller for 100 series Polaroid cameras
SX-70 conversion filter for using 600 film from Polaroid Japan

Flash adapters for the Polaroid SX-70.

The adapter plugs into the flashbar slot and provides a x-sync standard pc socket where you can connect any electronic flash or radio remote like the Pocket Wizards.
The sync voltage can be 3 - 300 V so new and old flashes work reliably and safely.
The flash side is completely isolated from the camera side.



Circuit

The resistors mimic the presence of a good flashbulb at position 1.
The ignition pulse fires the optocoupler.

Build one yourself

The flash adapter started as a DIY instructions page when the Worldwide Web was still in its infancy.
After many requests from people who didn't have the time or soldering skills to build theirt own adapter I started building and selling them.
I still support anyone who builds a flash adapter and needs advice.

I recommend that you use a spent flashbar and use its contact strip and enclosure.
You find pc sockets in old, broken cameras.
All other components are standard parts, available at electronics suppliers.

Buy one of mine

I build my flash adapters on aerospace grade gold-plated substrate.
The components are hand soldered and the circuit is sealed with epoxy resin.
The adapter is ROHS compliant (lead free).

Price for one adapter is 50 US$ or 45 Euros shipped worldwide.

I know this is a lot of money for such a small device.
I could probably have them produced in China for one dollar and sell them for five if I ordered 20'000 pieces.
However the market is not that big so I assemble each one by hand, even machine my own pc sockets.
I spend about 1 hour on one adapter, not counting development and user support.

You can try the adapter and return it if you have any reason to do so.

If you would like to buy a flash-adapter send me an
e-mail.

flash@sx2pc.com

Polaroids from the Toronto International Film Festival by Jay L. Clendenin for the LA Times using the flash adapter.

Photo by Frank Palatini

Some more examples of photos shot with the adapter.