Nodal Points

50mm f/1.4 --> 82mm

50mm f/2.5 --> 107mm

105mm --> 127mm

16-35mm @ 35mm --> 55mm
16-35mm @ 24mm --> 55mm
16-35mm @ 16mm --> 51mm

24-70mm @ 24mm --> 58mm
24-70mm @ 35mm --> 66mm
24-70mm @ 50mm --> 75mm
24-70mm @ 70mm --> 80mm

85mm --> 149mm