10D sync cord problem...

[kanwingshing]

I was trying to hook up my 10D with my studio flashes and it was not working. When I read the manual it says I have to get a cord to reverse the polarity. So anyone know where I would be able to find such a type of cord. I was looking in B&H and Adorama and have no luck yet. Thanks.

[Dans_D60]

What studio lighting do you own? I have no problems with studio lighting and the 10D using the PC Sync connection. The following setup is using a Novatron 400VR with the Sync cable. Also, remember that most digital cameras (including the Canon EOS series) don’t tolerate sync voltages above 6 volts. I checked all my studio strobe units using a volt meter. The old Novatron was factory modified to limit sync voltages to 5-6 volts. Good luck!
Dan
http://www.pettusphoto.com

Studio Lighting using 10D PC Sync Connector
http://www.pettusphoto.com/setup.jpg

[kanwingshing]

Interesting, because the manual did say the 10D won't work with studio flash syncs unless we reverse the polarity. I am using a YinYan 320 studio flash and it sync perfecty with my EOS1n. Anyone have the same problem as I do?

[gyelland]

Thats really odd,

I had exactly the same problem with a EOS 5 about 4 years ago, in the end I made a sync lead myself and reversed the polarity of the plug at the flash end.

Seemed to work no problem then.

[Dans_D60]

kanwingshing wrote:
Interesting, because the manual did say the 10D won't work with studio flash syncs unless we reverse the polarity. I am using a YinYan 320 studio flash and it sync perfecty with my EOS1n. Anyone have the same problem as I do?

To be correct, the 10D manual states “some large studio flash units have a sync cord polarity that is the opposite of the EOS 10D’s PC terminal” The 10D has (+) at center and (-) at case. So far, my JTL 500, JTL 110, Alien Bees B800, and Novatron VR400 strobe units all work fine with the standard supplied sync cord and all are under +6 volts. To me the more important is voltage limits. 6 volts is about all the internal circuitry will tolerate. Higher voltages, over time, will reduce the life. Check here for more information: http://www.botzilla.com/photo/strobeVolts.html
Dan
http://www.pettusphoto.com

[kanwingshing]

These are very helpful information! Thank you.
Now I am planning to make my own polarity conversion cord. But I am also concern about the trigger voltage now. Is there any good suggestion for a good voltage regulator. I was looking into the Wein Safe Sync on B&H, however on the bottom of the item description they put a line in bold letter saying it might not work on Canon cameras!!
Anyone ever uses this particular item on Canon EOS cameras? Is there any other good regulators out there?

[justme_dc]

I am not 100% positive that this will work with canon Digital cameras as I haven't tested it. I really don't see why it wouldn't though. Hot shoes usually conform to a regular standard (other than minolta). The system I use to control my studio lights is the wein ssr jr. http://www.weinproducts.com/ssr.htm

It is infrared so there are no sync cables to fall out or trip over or high voltage to bake your PC socket. It fires from your hot shoe. I have had mine two years without ever replacing the batteries. It's a handy little device and much cheaper than the pocket wizard radio type transmitters. The only down side, as it is infrared, it must be in the line of sight of the receiver.....This has only been a problem for me on one occasion.

Good Luck to you!

[beech1]

Try pluging the sync cord into the Novatron the other way. The cord is polarized.

Don

[kanwingshing]

Hi All,
I have just done a little bit more research on the trigger voltage issue. Apparently, some people belief that the 6V limit for trigger voltage ONLY APPLYS TO THE HOT SHOE CONNECTION, and it DOES NOT NECESSARYLY APPLY TO PC CONNECTION.
Also on FAQ for EOS-1D on Canon USA site, they are recommending to keep the trigger voltage used on the sync port below 250V! Not 6V...
I am going to call up Canon Canada and check on the exact limit on the PC sync on 10D. I will post their answer once I got it.

[teddynet]

I've just had to call Canon UK coz my studio flash has 15volt at the PC plug, they told me that they don't recommend anything higher than 6volts on either the PC sync socket or the hotshoe.

The polarity has to be +ve on the centre pin but the wrong polarity doesn't damage the camera, it just won't work.

Rich.

[zigsig40]

I have the PS-500 Wein transmitter also, it measures 15.2 V, not good if 6V is max. I have not tried the new transmitter that is supposed to have a lower trigger voltage, has anyone? (By the way, line of sight is not necessary with the Wein. I have tripped the receiver in other rooms in my house). Sig.