If you use your 55-200mm lens instead of the 18-55mm at the 55mm zoom setting (f/4) you will gain a full stop over the 18-55mm at 55mm (f/5.6). The one stop gain in aperture will allow you to use a shutter speed twice as fast given the same ISO. The rule of thumb for the minimum shutter speed to prevent blur due to camera shake is: Minimum Shutter Speed = 1 / 1.5 X focal length of the lens. Minimum Shutter Speed = 1 / 1.5 X 200mm Minimum Shutter Speed = 1 / 300 th sec. The above formula is for DX bodies without the use of VR. Good Luck and Enjoy your Nikons!