Ja Mark I did bud....I get it. You have no choice then but to go as high as u can on your shutter. I constantly use 1000th when I have light, even though it sacrifices a bit of detail, keeps me steady.

I think that is cropped, at 50ft I would trust the quality of the zoom and zoom closer rather than crop as much. There will be very little grain effect unless you were wanting the grain effect.