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I'm ready to be corrected, but if Alienbees (I wish these were more readily available here in the UK) work the same as most studio-type heads, then the 7D won't trigger them on its own. It'll trigger a speedlight, and it MAY trigger a speedlight-clone which is designed to work in exactly the same way as a speedlight.
If you have (or get) a non-Canon speedlight-clone, and the 7D can trigger it, then you'll be able to use the optical slaves on the Alienbees so that the flash from the speedlight-clone will fire them too. You'll find these to be pretty sensitive too - if you don't need to use the speedlight to provide light, you can set it on manual and dial the power back to minimum, mount it on the camera, point it behind you and shoot, and the tiny burst of flash should fire the ABs. Failing that, you could get a trigger set (just one transmitter and one receiver), and use that to trigger the speedlight off-camera with the flash setting off the optical triggers in the ABs. For times when you don't want to use the speedlight, you can use the radio trigger to fire one of the ABs, with the other set to fire from the optical trigger.. Off-camera studio lighting is fun, and there are usually several different ways of doing any one thing.. You'll have a blast. ![]() EDIT - I just looked up the Metz 58 AF1, a competitor to Canon's 580EXII, and it lists "ETTL Remote mode (master and slave operation), so I'm guessing that means it functions off-camera exactly the same as the official Canon one. It's almost certainly worth checking if you have or are thinking of getting a different non-Canon unit, to make sure it can be controlled remotely by the 7D.
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I shoot Canon, and use Elinchrom lights. My Flickr Page - feel free to leave comments Last edited by Swisstony10; 08-12-2010 at 11:13 AM. |
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Yes, the 7D can fire the speedlight and Alienbees at the same time. We do it all the time, in studio and on location. With that being said though, we put the wireless receiver on the speedlight and when the Alienbee's optical slave sees that speelight go off then it fires itself. The 7D can not fire just an Alienbee wirelessly unless you buy the transmitter and receiver. You'll have a great time tinkering with off camera flash though. ![]() EDIT: Paul C. Buff (Alienbee people) makes a couple different types of transmitters and receivers. Make sure that you get the right one if you decide later that you'll want to go with their CyberCommander. Paul C. Buff has a distributor in Europe it seems: http://paulcbuff.eu.com/cms/
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-When confronted by a difficult problem, you can solve it more easily by reducing it to the question, "How would the Lone Ranger handle this?" -I'm a vessel of useless information; just ask my wife. -Critiques and editing of my pics for DPS always welcome- Last edited by oldwolf; 08-12-2010 at 12:20 PM. |
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You can get a lot of different wireless triggers, and the most common base denominator is an optical flash trigger which "sees" another flash and triggers the one(s) it is connected to. It works most of the time, but it's not pretty. The 7D is designed to use it's built-in flash as a master for the EXII (and EX, I believe) speedlights that are capable of slave (current the 420 and 580 series). This uses infrared controls to indicate power and distance (similar to Nikon's CLS). This was previously only attainable using the 580EXII on the camera as a master. It is also one of the few solutions to offer TTL control. Your best bet is to use a wireless radio trigger of some kind that will allow your camera to trigger anything else it is connected to with the triggers. In most cases you lose TTL (which wont matter with Alienbees), though, so if you've gotten used to that, then watch out. That being said, using manual power on flashes is easier and more reliable.
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I am responsible for what I say; not what you understand. OsmosisStudios Gear List |
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Oh dear God.
This is all extremely confusing for me ![]() But thank you all for the responses! It looks like i will be getting some triggers with the Alienbees. I am still extremely new to the whole off camera lighting concept, so I am still learning the terminology.
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