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p.1 #3 · p.1 #3 · Freezing motion while incorporating ambient light | |
Something to understand is the amount of falloff you'll have from your flash to subject distance, and the rate of that falloff iaw ISL as it pertains to your BG ambient lighting.
What that means is that if your flash is close to your subject, your flash power will be "less", but the amount of flash that will reach to your BG areas will be less as the falloff isn't strong enough to get there.
Conversely, if your flash is far from your subject, the relative falloff between the subject and BG areas will be not as different.
Understanding how the ISL falloff vs. flash to subject distance is in play will be a tool to use ... and may influence what focal length you want to shoot with, if you are using on camera flash. But, the key component here is going to be understanding what your flash to subject distance is, as a means of controlling falloff (angle / flag / gobo / barn door are other aspects of control, but ISL may be all you need) from reaching areas you don't want additional luminance from your flash.
Also, you can use a bit of -FEC to keep your subject flash underpowered, and then lift those areas in post.
Been a while since I've done this kind of work, but iirc, set your exposure for your desired ambient exposure. Then set your flash to subject distance for that aperture (with or without FEC to taste).
More than one way to skin this cat ...
Either way, I'd STRONGLY RECOMMEND going to the venue in ADVANCE (i.e. days or weeks before the event) and working up some TEST SHOTS to get an idea of your working distances, and the ambient lighting in play.
For seasoned and experienced folks who do this regularly, this is "old hat" to them, and may feel the advance venue testing is unnecessary. But, for someone who is new to it ... (or, just rusty about it) ... the advance testing will A) help you understand it, B) allow you to try different approaches, to get the desired style you want, C) give you the confidence going in to your event that YOU GOT THIS !!!
GL and HTH ... looking forward to seeing the pics you come up with.
P.S. Check with the Wedding Forum. I'm sure this comes up frequently for them, in dimly lit reception settings.
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