Slave/master lighting

[Mayor]

Using a 580 for a master and 550 for a slave.

I'm considering using a flip-it on my on-camera light and shooting the 550 into a 32" umbrella (bouncing the light), with both set on ettl. The slave would be next to me and about 8ft. high.

My question is ... if I did this would I actually be getting the benefit of more light OR would I get the same amount of light (since it's ettl) just distributed a bit differently.

Thanks -

Scott

 

[Big Mike]

The exposure levels should be roughly the same, because it's E-TTL...but the light should be softer because of the diffuser accesories.

That being said, it's sometimes hard to predict what E-TTL will do so be prepared to use FEC or adjust your slave / master ratio.

 

[Sw1tchFX]

When your strobe is off camera, It's usually best to shoot in manual, you achieve greater control and consistency that way.

 

[Village Idiot]

You can forgo the TTL function all together and shoot manual with Canon's wireless system, right?