You know as a general rule of thumb, we're advised to set our shutter speed something around 1/focal length of the lens to avoid camera shake. For example, using a 50mm lens, it's advisable to use something around 1/50 second. The question is, that when you have the 1.6x focal multiplier of digital, would you use the actual focal length (written on the lens) or 1.6x that in order to estimate the shutter speed to use?
I believe you would use the 1/focal length/1.6. But what do others think?