I have now an Mitutoyo M Plan APO 5x objetive infinite. I use directly with my Canon 600D similar to use my rest of Nikon BD Objectives, like 5x.
This is the result with my Nikon BD 5x: http://MacroRail.com/imagenes/ApiladoH021174_1.jpg
Next I take the same photo with the Mitutoyo: http://MacroRail.com/imagenes/ApiladoH021160.jpg
I see that the Nikon have more contrast, and the nikon a little more definition.
Ok, I use my Canon Zoom Lens EF 70-210 1:3.5-45, it's no very good but i have this

I take a new photo (sorry for the difference of ilumination) and obtain this: http://MacroRail.com/imagenes/ApiladoH021201_1.jpg
Really expected more quality. What happend?
If someone has the Mitutoyo, how zoom lens use? Tamron? Canon?
I haven't in this moment a good adaptor from the mitutoyo to the zoom lens, for this reason i used three adapter rings. I hope to have an adaptor in some days.
Thanks in advance.
Regards, Oscar.