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Message: <blockquote data-quote="Robert Mitchell" data-source="post: 110115" data-attributes="member: 11282">Yup, I knew that, but wanted to give an overview of the scenario. As long as there is no ambient contribution then the flash duration of the strobe becomes the effective shutter speed and the shutter speed on the camera doesn't really matter. For instance, my strobes have a flash duration of about 1/2000s at the power setting I typically use, and if that's the effective shutter speed with little to no ambient contribution then I'll never have any trouble freezing my subject, even if they're moving around a bit.With lesser quality and budget strobes, one of the first things that gets sacrificed is flash duration and I've seen strobes that have a 1/125s flash duration. If that's the effective shutter speed then you'd have to be much more careful about subject movement as well as camera movement to ensure sharp images.</blockquote>