Can anyone diagnose this problem please?

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Jason
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I'm having problems with my Yongnuo RF-602 wireless flash triggers and receivers. The problem is seen below.

untitled-5-5 by Jason-Gardiner, on Flickr

untitled-4-4 by Jason-Gardiner, on Flickr

untitled-3-4 by Jason-Gardiner, on Flickr

untitled-2-5 by Jason-Gardiner, on Flickr

untitled-1-3 by Jason-Gardiner, on Flickr

There appears to be an amount of black that slowly rises up from the bottom that coincides with the shutter speed. As you can see from the second to last picture, the area isn't completely black.

I have tried this with 2 different transmitters, 2 different receivers and no combination will change the outcome.

I also have a flash cord which works fine at any shutter speed. So why is this happening with the wireless buisiness?
 
It's the sync speed of the 6d I believe its only around 1/180, your shots are 1/250 and above
 
Thanks for the replies.

What I don't understand is why the flashes will work at 1/1000th with a cord but not wirelessly? I have the flashes both set to high speed sync. Am I missing something?
 
Because the cord makes the camera think the flash is still on top of the camera, not off, thus retaining HSS which allows you to shoot above the sync speed.

How are you triggering the light off camera?

Edit - ahh, 602s are dumb triggers, and do not retain HSS.
 
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Thanks Kris. I'll have a think about triggers that retain HSS then. Anyone have any recommendations that won't break my bank?
 
Not completely, I guess a bit of research is required. Thanks for your help :)
 
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Main is the considerable loss of power through the flash (because it has to output multiple little bursts to light the slit between the travelling curtains), reducing effective distances and restricting modifier choices.

Most serious HSS users will gang HSS compatible lights together to bring the power back, like:
http://www.youtube.com/watch?feature=player_embedded&v=xNDAINwhTWU#!
 
It's not that bad.

Two guns will double your HSS output, four guns will double it again.

Four Yongnuo 568 guns, with Yongnuo 622 triggers underneath, will still cost less than one 600ex-rt.
 
Kris said:
It's not that bad.

Two guns will double your HSS output, four guns will double it again.

Four Yongnuo 568 guns, with Yongnuo 622 triggers underneath, will still cost less than one 600ex-rt.
Click to expand...

We ought to be able to put a £ value on a stop of light, like we do on Gb on HDDs and flash memory.

For lenses it's quite expensive - the 70-200 F4 vs the F2.8

Doubling up flashguns soon gets into the price of battery powered studio heads. Someone should take this on as a project.
 
Phil V said:
Doubling up flashguns soon gets into the price of battery powered studio heads. Someone should take this on as a project.
Click to expand...

None of which offer HSS unfortunately.

Powerful studio strobes offer you control of the flash/ambient through aperture, but don't allow you past the native sync speed.

HSS means you can control it through the (more action stopping) shutter beyond the native sync speed, thus avoiding the high ambient blur of the sync speed restricting studio strobe.

Shoot models standing still? Take your pick.

Shoot scramblers? Different matter
 
we need a lightweight, batterypowered, studio head capable of HSS and accepting any modifier from any brand. It needs to be weather sealed and last min 4 hours on a single charge. Needs build in exchangable battery pack and needs to be compatible / controlable with the in camers flash menus........Simples really!!!!

8 622 plus 8 yongnuo 568ex would set you back a grand.....
 
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