[davidmanze]

It occurred to me that if you bought it as bokeh monster, you have no real need to get it closer to the D750. After all, you then won't use this lens anywhere near infinity? Same as my FL 55mm f1.2 not clearing the mirror at about (and past) the 10 meter mark. Not an issue really, 2mm with e 135mm lens when one uses it for closer than infinity stuff.

 

 

And yes, the F-mount has a flange distance of 46,5mm, and M42 one of 45.46mm (I wonder why they chose that specific distance).

 Bokeh the foreground?

 

 

 They chose it because no one else would be stupid enough to use it of course!