Sometimes. If I want my flash output on the camera, I'll use the 580 and the slaves off the to the side. If I don't want the flash output on the camera, I'll use the ST-E2 to trigger. Both methods are using ETTL, which is why I went with the ST-E2 instead of Pocket Wizards. Eventually I'll upgrade to the Radio Poppers but I haven't had the need for wireless since most of what I shoot has line of site for the IR and my distances are generally under 20-30'.
Here's I shot I took while practicing with flashes on cars. I never used it since I didn't like how the flash was hitting the car from the left (pass. side rear... had to adjust the stands about 2' higher).
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A shot like this wouldn't work as well with a flash firing straight on side it would cause a hot spot on the passenger side door, so the ST-E2 works better in this situation. For a 1/4 angle shot, a flash straight on helps fill in some of the shadown on the lower portion of the front bumper since the flash on the right causes a bit of a shadow since the stand is set for about 6' high.
Great post....So let me get this straight: so if you want an on camera and an off you will use the 580 to trigger the 430. If you want them both off you will use the ST-E2 to trigger both. With both of these methods the TTL still works correct? I'm assuming the the shot you posted was with naked flashes correct?
Thanks for the help GR...its just something i have to learn especially now that i'm getting paid for some weddings and realestate shots.
now I need a wishlist:
430 EX
ST-E2
light stands
umbrella/flash mounts
an umbrella or diffuser