it does need full 16 bit accuracy for the position information.

it has subpixel scaling - which is important when images are zoomed in.

when you zoom in 2 or 3 times you need the full accuracy.

people zoom in this far - and sometimes more.

also with pixel type fixtures - full resolution position is important.

all other 16bit channels such as scale, in point and outpoints, also require full 16 bit accuracy.

thanks