will this work with the canon 550EX flash?
1461479
It works for any speedlite. But your camera should be under the list of model.
1461480
I use it with a 430 EX and a 580 EXII. I believe it should work with the 550EX.It is not models dedicated
284305
It should work on anything with a canon flash site. If it can use the canon speedlite etc then yes.
1157174
I purchased this item for my Canon. I would have to guess that as long as you have a standard flash hook up on your camera it should work. As far as the flash itself, it is a good flash. It works great and I have had no issues with it so far. I hope this helps.
1314892
That's a bigger flash head so yiy will need the version that fits the canon 580ex or 600ex series
467538
I wouldn't know about it as I've never used it with the model 420EX before. I'm using it with model 600EX, and it's a very tight fit that you need to exert a little bit of force to put this stuff into and remove it from the flash head. Assuming the the flash that I'm using has the same shape as yours, as long as the width of your flash is within 7-7.5 mm (0.27 - 0.29 inch), and its height is not longer than 4.5 mm (0.17 inch), I think this stuff should fit on your flash.
1736502
I don't think so, but a similar flash is specifically for canon camera....please check it...
273716
I don't know if it works with those, you can go to the canon web site to check.
1914148
see photos I've posted. Should work with just about any available speedlight. Nothing brand- or model-specific about it. Wrap the velcro around the head of the flash gun with velcro part facing OUT, then 'stick' the softbox onto the velcro - works great.
1088382
It will work with it if your lens has a diameter for filters that is one listed in the adapting rings that come with the flash. It will work, but so far, I have not got good photography results with the unit.
1570653
It might be but I would suggest getting the YOngnuo battery pack that is compatible with your flash. If you have a canon flash and camera use only canon products.
154736
Yes it is compatible with all Canon EF and EF-S mount cameras... I own a EF 70-200 f4 L and use it on my Canon Rebel XSi (450D) and my 60D. Both of which use the EF-S mount used on your 550D.
1502489
It works fine with the canon 600 speed lights without any extra adapters. This is all I shoot with now!
411746
This should work with any flash that takes a sync cable as long as you are using the proper transmitter from your camera
801053
Im sure it will work. However I do not have this flash anymore. It broke after two weeks and I returned it.
377475
I had bad experience with this purchase .. It was designed to work with Canon 585 EX flash .. It did not work
427490
For ETTL they'd have to be Canon compatible, but even then I'd check with the Phottix user groups/user communities about each specific flash you have in mind.
790050
Not sure. First make sure your flash has the proper connection for the adapter of the battery pack.