When I shoot with my Triopo speedlight I have to set my camera to f/5.6 and 1/100 with the flash at 1/4 power.

If I increase the flash power, the picture is black. If I change the shutter speed or aperture, the picture blurs.

I want a simple way to adjust both the flash and camera to any shooting mode I need . Note that I am using a 55-200 lens.