How to shoot a water spray with 550EX?

[nickjohnson]

My current setup for this will be a 1v and 550EX trying to capture a

spray of water. Focal length should be pretty normal (between 35 and

70 I expect). Not exactly frozen, but I want the water to be pretty

well defined. First of all, will 1/250 of a second be enough for

this?<p>

 

 

Second, the actual shot. I hope to shoot the flashed water on a black

background so I only have the water. Then I can photoshop that on top

of a person getting hit, so it looks like their spit (or blood, or

whatever) is being knocked off their face. Thing is, I can't see how

I could do this with direct flash. I've thought about getting a shoe

cord (or better yet, if I'm going to buy anything it would be an

ST-E2) so I could pull the flash around and not flash the black

background.<p>

 

 

I was hoping that someone has tried to do odd things with their 550EX

and could share thier experiences. Again, the water is not the focus

of the image, just another layer to be added to the final image.

[nickjohnson]

duh. bulb mode. looks like I can do this on the cheap now. new question: what power setting should I put the flash on? 1/64? 1/128? Should I use a softbox and at what distance do your calculations address? I expect to shoot ISO 400 film.

[NK Guy]

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