Over the weekend, I found a great deal on a flash for my Canon EOS 30D at a thrift store, but I can’t find any information on this particular flash unit to determine whether or not it’s safe to use on my DSLR.
I know that it technically works, because I’ve successfully mounted it on my 30D and was able to get the flash to fire when I pressed the shutter button, but I’ve heard some rumors floating about that Canon and Nikon DSLRs are very particular about their flash units, because of their TTL flash metering and circuitry that communicates through the mount.
If anyone has any information about this particular flash, or the specifications on the EOS series DSLR flash mounts, please leave a comment on this post.
Thanks! 😀
Update: I’ve started a discussion in the PDX Strobist group on Flickr to accompany this post:
“Flickr: Discussing Is This Flash Compatible With My DSLR? (Focal DT-5000)“
Williamo's Blog 
I had the same good fortune in finding this flash unit and would like to know if you have, or know where to find, the user’s manual for thi flash unit.
I wish I knew – I still haven’t been able to find any information on this flash. If you’re going to use it on a DSLR, though, I’d suggest getting a Wein Safe Sync adapter (http://www.ok1000pentax.com/2006/05/wein-safe-sync-hot-shoe-adapter.html) to make sure you don’t fry your circuitry. Otherwise, good luck on finding info! I’ll be sure to post anything else I find here…if I can find anything. =P
I have the same flash still hanging around in my camera bag, and have used it off camera with a Wein HS Peanut — wired to the PC terminal on the peanut — for at least 1000 flashes with no problems. (In my case, it’s a D200 that’s at stake.) I often use it as a wireless flash mounted to the same peanut with the on camera flash in manual mode at 1/64 indoors. I’d guess the speedlight itself is probably about GN 120 at 100 ISO. (Roughly on par with a Sunpak 433 or the like.)
If you’re really nervous about it, don’t attach it to to the hotshoe; use it remotely via a PocketWizard or some other such non-voltage-transmitting-to-the-hotshoe mechanism. If you’re a little more tolerant, the SafeSync is a great suggestion.
But if you’re all out adventurous, Google the trigger voltage tolerance of your camera (I think it’s stated to be about 250v for a Canon 30D) and then measure the trigger voltage of your flash (you do have a voltage meter, yes?) If the flash measures below the tolerance, you’re fine.
Of course … your mileage may vary 😉