Hi Caveman. Quite a feat.... and at 1/13 sec no less. You must have nerves of steel, sitting in your seat at disney and bracing the camera to minimize the shake. You wanted to stop down to increase you dof, but f/2.8 was as far as you dared.... but, even though i do not own that 35.f1.4L, I would have opened up to 2 in an effort to get my iso down to 800. At 800 the curtains would be a litte smoother without any noise. This photo does have some noticeable noise.... however.... the design and exposure is great... and it shows the power of one of the best prime lenses on the market today. All my best, Michael.