Yeah shutter speeds just to give you an idea, i tested mine and this is what i got

5.6/210
1 = 1 sec
1/2 = 1/2
1/4*= 1/5
1/8*= 1/7
1/15*= 1/14
1/30*= 1/30
1/60*= 1/60
1/125*= 1/100
1/250*= 1/150
1/400*= 1/175

So you can see it's very important to know you equipment.

Paul