I was looking at a camera and cactus triggers and read it can do 1/125 sync speed with the camer (it's a sony). I've not used flash other than casual use long ago and don't know how that speed impacts my intention. I want to do outdoor portraits with a softbox or shoot through umbrella. I'm guessing if I'm doing outdoor portraits in the shade with 1/125 that I should be safe? I don't know. Thanks.

