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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 02 Apr 2007 (Monday) 23:41
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580EX - 550EX 2 Pocket Wizards????

 
taygull
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Apr 02, 2007 23:41 |  #1

I can't find my manual...so I'm looking for you guys to assist.

I've got a 580EX and a 550EX along with two pocket wizards. I've got the cords needed to hookup one of the pw's to either flash.

What I'd like to do is to be able to control the amount of light in each unit. I've got them on stands with small umbrellas but for the life of me I can't figure out how to get a 2-1 ratio.

With the unit connected to the PW I've played with various settings and can't figure out how to adjust them like I would studio lights.

For example if I meter off of my main light at f8 I'd like to set my fill light to f/5.6.

What I'm finding is when I set the main light to master and the fill light to slave the settings seem to adjust both lights. I'm able to dial down the main light but the fill adjust as well. I've tried different modes with no luck.

I'd appreciate helping me get in the right direction, as I stated I'd like the same flexibility I get in studio.

Thanks


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René ­ Damkot
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Apr 02, 2007 23:57 |  #2

Didn't know you could use a master/slave config with the master connected to a PW?
In a normal ETTL situation, this is were ratios comes in.


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taygull
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Apr 03, 2007 00:06 |  #3

René Damkot wrote in post #2975764 (external link)
Didn't know you could use a master/slave config with the master connected to a PW?
In a normal ETTL situation, this is were ratios comes in.

If they were both off camera then how would you fire them? A sync cable? What I'm wanting to do is use the PW's as the sync cable.....


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René ­ Damkot
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Apr 03, 2007 00:15 |  #4

Either another PW, or an optical slave (tricky with Canon flashes). Or cable for the closest flash.
But both flashes fire when using your set up (PW + master/slave)? Also if they're they set to manual flash? Never heard of that... Might give it a try one day.


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cosworth
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Apr 03, 2007 00:19 |  #5

Fire them in manual and adjust to your desire.

Yes, they do fire slave/master in wireless mode.


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Curtis ­ N
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Apr 03, 2007 00:21 |  #6

The only way to setup ratios with wireless E-TTL is with one of the flash units connected to the hotshoe. The camera measures the light, and it must be able to communicate instructions to the master.

I think you can fire the master via PocketWizard and let it trigger another flash in slave mode, but only with manual power settings.


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René ­ Damkot
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Apr 03, 2007 00:22 |  #7

Learned something new :D


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cosworth
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Apr 03, 2007 00:27 |  #8

Curtis N wrote in post #2975849 (external link)
I think

I do it all the time. It works great. I even throw in optical slaves if need be.

Use the ST-E2 to fire the 580 and 550s in various configs too.


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PacAce
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Apr 03, 2007 00:59 |  #9

When using the PW to trigger the master, just make sure that the sync speed is set to something lower than the max sync speed, like 1/125.


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taygull
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Apr 03, 2007 06:51 |  #10

I am able to get both to fire, that is not the trouble.

I can't seem to figure out exactly which mode to put them in and how to adjust the light so I can get the ratio that I'm looking for.

Which would be better to use as the master and which the slave. I'd appreciate very specific setup advice as far as mode and how to adjust the manual setting in each.


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taygull
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Apr 03, 2007 06:52 |  #11

PacAce wrote in post #2975986 (external link)
When using the PW to trigger the master, just make sure that the sync speed is set to something lower than the max sync speed, like 1/125.

Are you saying you adjust the sync speed on the flash or just make sure shutter speed is 1/125 or lower?


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Curtis ­ N
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Apr 03, 2007 07:05 |  #12

taygull wrote in post #2976881 (external link)
Are you saying you adjust the sync speed on the flash or just make sure shutter speed is 1/125 or lower?

Shutter speed.


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taygull
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Apr 03, 2007 07:54 |  #13

Thanks,

It'd be great if I could get some more specifics on how to control each unit yet have them work as a master/slave combo. When I adjust the master it seems to adjust the slave as well. It does not seem to matter if I'm in Ettl or M mode.


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Curtis ­ N
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Apr 03, 2007 08:15 |  #14

Maybe it might help to download the instruction manuals?


"If you're not having fun, your pictures will reflect that." - Joe McNally
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taygull
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Apr 03, 2007 08:29 |  #15

Curtis N wrote in post #2977170 (external link)
Maybe it might help to download the instruction manuals?

OK...I was hoping for some help here.....

I've helped many folks when a read would be the best option.....if you don't want to help then feel free to unsubcribe to the thread.

Thanks for the help you did provide.....


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580EX - 550EX 2 Pocket Wizards????
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