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5D Mark II Flash Sync Speed

Tonio Lombardi , Dec 28, 2008; 07:00 a.m.

Hi guys,
I finally got my 5D MKII after hours of contemplation and pros and cons :) I m very happy with it apart from the fact that I am getting a black band of the 2nd curtain (i think) when i sync the camera with my elinchrom radio equipment and studio strobes at 1/200s. I've tried it at 1/160 and the band is not there. The specs of the camera say it can sync at 1/200.
Has anyone tried this with this camera yet? Does my camera have something wrong?


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Mark Kissel , Dec 28, 2008; 07:16 a.m.

I don't have the 5D, but my 50D has some language in the manual about using studio strobes. I think the specs are for Speedlite flashes. Did you set the sync rate in the custom functions?

Tonio Lombardi , Dec 28, 2008; 07:22 a.m.

The sync rate in the custom functions relates to the Av mode. I'm shooting in Manual mode. Speedlite flashes can sync at much shorter shutter speeds in High speed mode...

Dave Trayers , Dec 28, 2008; 07:55 a.m.

Page 104 of the manual. The sync with larger units may be slower. This is typical of all the Canon DSLRs. The specified sync (1/200 or whatever) is for the Canon Speedlight.
With my 5D2 I have to use 1/160 with strobes and PocketWizards. With a 40D it's 1/200.

Bruce Muir , Dec 28, 2008; 08:53 a.m.

I have a 5D & 40D and remote trigger Vivitar 283 shoeflashes with skyports.

With the 40D (synch speed 1/250) i get the curtain edge at 1/250 but not at 1/200.

I just got the 5D and haven't tested but i suspect the slight delay with the skyports will force a 1/ 160th speed as well.

Dave is correct about Canon's recommendations for using off shoe (synch speeds are reduced).

Philip Wilson , Dec 28, 2008; 10:48 a.m.

Just tested my new 5D mark II with Bowens and I had the same result until I dropped the shutter speed to 1/160. With an old Metz CT-45 it will synch at 1/200. I am not sure why it needs longer for studio flash - perhaps there is a small delay in firing.

David Bell , Dec 28, 2008; 11:03 a.m.

I presume you're using the Elinchrom Skyports? I have a set and with my 5D the limitation is around 1/160. This is a function/limitation of the latency in the radio triggers, not your 5D. With an on camera speedlight you will see "better" results in terms of max possible sync speed.

Mark Nagel , Dec 28, 2008; 12:05 p.m.

The 5D has a lower sych for strobes, non-Speedlight, 1/125 (published).  I think the mkII is 1/160.  The published 1/250 is for speedlights.

Puppy Face , Dec 28, 2008; 01:02 p.m.

I've used EOS since 1990 and all of them, every single model, could only sync with studio flash at 1/60 or slower. Other cameras I've used were same in this regard. It's not the fault of Canon, it's the studio flash specs. Besides, as long as studio strobes are the main light actual camera shutter speed is a moot point. Why? Flash duration is something like 1/10000, making that your effective shutter speed.

Tonio Lombardi , Dec 29, 2008; 03:06 a.m.

Thanks guys.

that explains it all!

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