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Message: <blockquote data-quote="keano12" data-source="post: 437864" data-attributes="member: 36571">Hi guys is this correct. I think I understand flash, ambient and freezing.1. If shooting outside in bright ambient light or inside a studio with bright continuous light we can crank the shutter speed to freeze motion because no flash is involved. So syncing doesn't matter.2. Using a small aperture you can kill the ambient light if your strobe has a fast flash duration and still shoot within your cameras sync speed and freeze motion.3. You can freeze motion even at slow shutter speed 1/15 second if there is zero ambient light and only flash. 4. If mixing ambient and flash and using the shutter speed to underexpose the sun or ambient light you need HSS?</blockquote>