Yes I have tried this actually, I have a Nikon P900 camera and have filmed things you shouldnt see when you consider the curvature formula of 8 inches per mile squared. I have also zoomed into boats, ships and oil rigs you cant see with your naked eye. There are also many videos on YouTube you can lookup, where people zoom into boats and ships that disappear with the naked eye and you can also find videos where people zoom in and just wait to catch the moment the boat actually disappears below "the curve" - it doesn't happen. The vessels turn into a mirage and start distorting because of the atmosphere and heat before you see them disappearing behind an imaginary curve.

I know very well the balloon video with the lego man, I used it in my flat earth documentary demonstrating how the appearance of the shape of the earth can be manipulated. Watch the first episode of my documentary Finding the Curve. It's filmed with a fisheye lense, making the horizon distort from concave to convex to straight flat. The kids aren't conspiring anything ofcourse, as is the case with most people - they're just ignorant of the fact.

I'm looking forward to your reply! Cheers!