I would say it’s at about 1/60. The guy is still sharp but the pencil leads have some motion blur. Slower than that you will start to get motion blur in human s

I would say it’s at about 1/60. The guy is still sharp but the pencil leads have some motion blur. Slower than that you will start to get motion blur in human subjects if you are unlucky. 1/30 it is still possible to get sharp portraits but some will have motion blur.