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07-11-2010, 03:18 PM   #1
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PC Sync flashes safe on DSLR?

Flash in question is a Promatic FA 1000 which I've used fine with my Spotmatic.

The only thread I found referencing this made an unsure assumption on whether the sync socket was protected on our DSLRs.

07-11-2010, 04:27 PM   #2
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It's not listed here: Photo Strobe Trigger Voltages

but if it's the same as the 400 that is listed, it should be okay.

To be sure, you should test with a multimeter. Connect the center pin and side pins and trigger the flash with the test button.

There is no confirmed amount of voltage that Pentaxes can handle, but the common value is around 30V. It's unconfirmed whether the PC/Sync port can handle higher voltages, but some believe that it can handle up to 250V, depending on the body that you have.
07-11-2010, 09:00 PM   #3
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I've used a 30 or so year old Norman power pack with all my cameras that would plug in via PC with no problems.
The Normans are well known to have a very high trigger voltage.
Dave is offering sage advice, but for myself, if the camera burns out from a corded flash, it's going to be a warranty issue.
They can't put a feature onto a camera and not make it usable.
I'd go ahead and take pictures.

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