When an opacity option is added to a 3D object, all 3D object looked blurry.
Operating system: Windows 10 64 bit. Mathematica Version: 10.4.1 and 11.1.1.
Graphics3D[{Line[{{1, 1, -1}, {2, 2, 1}, {3, 3, -1}, {4, 4, 1}}],
{Opacity[0], Tetrahedron[]}}]
Opacity[0]
andOpacity[1]
even for Version 10.4.1. $\endgroup$ – bbgodfrey May 27 '17 at 3:45