I am locked in a debate with a friend about the minimum shutter speed you need to hand hold a zoom lens without camera shake. I know we have vibration reduction to consider, the shooter's age, whether we have been drinking the night before, sensor size, etc, etc.
If we take the basic premise that you need at least 1/focal length as a minimum shutter speed to hand hold a lens without camera shake then if you have a 18 –200 mm focal length lens AND we are shooting at the 18 mm end, what is theminimum shutter speed?
Is it 1/30 sec, as this is the next shutter speed above the basic rule of 1/focal length (18 mm); OR
Is it 1/250 sec as this is the next shutter speed above the basic rule of 1/focal length where you have a 200 mm maximum focal range to your lens?