I just ordered two 550EX's and the transmitter. Should be here tomorrow. Thus far I've been using multiple 300TL's and the off-camera accessories so I'm familiar with off-camera flash.

I know that using a 550EX on-camera provides more ratio control than using the transmitter but other than that, is there any good reason to do it? I can't imagine a scenario based on previous experience where I'd actually be using an on-camera flash if I were also using flashes off-camera.

Thanks,

Paul

-- Paul Ferrara (paul@columbusoft.com), November 09, 2000

Answers

The ST-E2 on-camera provides for only two groups for ratio control, while a 550Ex on-camera provides up to three groups. But, you have only two speedlites...

For my use (hummingbirds), I usually use one 550EX on camera for main lighting and off-camera units for side and background fill.

-- Dave Herzstein (dherzstein@juno.com), November 13, 2000.

The question was... apart from more ratio control is there any good reason to do it? I guess your answer is "no."

As for the number I currently own, you're correct, but there's no shortage of them AFAIK.

Paul

-- Paul Ferrara (paul@columbusoft.com), November 13, 2000.

I can see ratio control being important for large static (studio) setups - control everything from the camera position. But, for my use I need all of the flash power that I can get.

-- claws (dherzstein@juno.com), November 14, 2000.