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Message: <blockquote data-quote="yauman" data-source="post: 383471" data-attributes="member: 15418">When you go faster than the max sync speed of the camera, you will then be at the mercy of the Speedlight.  In other words, when you use the High Speed Sync mode (ie FP sync), it's the speed light that dictates what the max sync speed would be.  I have a SB700 and I have used it at 1/4000 sec shutter speed with my D7100.  I understand it can do 1/8000 but never actually used it. (See page 245 of your D7100 manual)   But using the FP mode really burns up your speedlight batteries fast. The way it works is the flash puts out a series of 1/10,000 sec pulses of light in that mode - sure heated up my SB700 real fast.  So, not all speedlight can work in the high-speed sync mode with your camera but if you have the right one, you can go 1/8000 shutter speed[ATTACH]125613[/ATTACH].</blockquote>