Originally Posted by Weebl
What did Capt. Kirk say?
"We need more power".
More speed too, it looks like blur vs focus. A higher F stop will help as if moves around in the water and if you have a platform to let the cart. roll off the focus point won't change as much as being hand held.
big improvement. I would say it's now down to your focus point. How far away from the case are you?
if really close, definitely stop down the aperture and open up your DOF
It's definitely not speed anymore at 1/4000
That would get a hummingbirds wings at a dead stop