I think the 283's are like the Olympus 300, QA310 flashes, trigger
voltage up around 100V. I have seen a many OM-1/2 with pitted flash
contacts (main and safety contacts). A few OM-1's with contacts
seriously burnt. Some pitting is expected over the years. I would not
use one of these old flashes on the 2S, 3Ti, 4, 4T as the trigger
voltage goes through an IC. Definitely a no-go on all E digital bodies,
why chance it? E flash contacts are rated at 5V
___________________________________
John Hermanson
Camtech Photo Services, Inc.
21 South Lane, Huntington NY 11743
631-424-2121 | Olympus OM Service since 1977
http://www.zuiko.com | omtech1 AT verizon dot net
Chuck Norcutt wrote:
> Some old Vivitar 283's are rumored to have trigger voltages as high as
> 600 volts. We should ask JH if he's ever seen any OM-1's with X-sync
> switch contacts that show evidence of arcing like old ignition points.
> :-) <http://www.botzilla.com/photo/strobeVolts.html> I don't recall
> the trigger voltage on my own 283 but I'm pretty sure it's over 250.
> Old 285's had pretty high voltages also. But the last 285 I measured (a
> 4 or 5 year old 285HV model) was only 12 volts. Still, technically too
> much for some early Canyon digitals like the D60 and 10D which could
> only handle 6. The aforementioned 12 volt 285HV was actually used on a
> 10D for a long time without apparent incident but I read somewhere that
> it leads to long term shutter damage because of the tie between shutter
> and X-sync.
>
> ps:
> A Radio Shack volt meter to check the trigger voltage is a lot cheaper
> than a Wein SafeSync. So is a radio slave or other type of slave to
> isolate the flash from the camera body. Hmmm. I wonder if my old 283
> will fry an oboy radio slave. :-) :-)
>
> Dr. Flash
>
>
> usher99@xxxxxxx wrote:
> Apparently
>
>>some flavors of the 283's are OK and have a lower T Voltage, though I
>>don't remember the details and I know mine is not.
>
>
> ==============================================
> List usage info: http://www.zuikoholic.com
> List nannies: olympusadmin@xxxxxxxxxx
> ==============================================
>
>
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|