Gavin/Leila Hinks wrote:
.... This time with something less obtrusive than string.
btw, this would be another option:
a video camera is no Hawk's Eye. in terms of: using a thin, very thin string/wire, which circumvents the resolution of the camera! That's a century old theatre trick, Mr Copperfiled used in his impressive 'Volare' Illusion (the camouflage-like background supports to 'hide' the wires) ...
So, without green-screen or any fix-it-in-the-post marvel, you could perform this trick as a 'practical' ...
A professional Magician once told me, 'mouse grey sewing cotton' is close to invisible just a few inches away from the eye/camera ...
.. I can not tell you what 'mouse grey' is exactly in RGB/Hue/Pantone# … but worth a try! ...