The Nikon D3S's maximum X-sync speed is 1/250s ... allowing more creativity for on or off camera use, or as a remote Speedlight. Flash Tube Overheat Protection: An added measure of safety is ...

Flash photography has been a particular strength of Nikon SLRs for some time now, and the D5100 retains the company's implementation of Nikon's 3D Color Matrix II metering for flash exposures.