MX enablement

[Adam Maas]

Well, I traded some Nikon gear I wasn't using in on the weekend, and 
aquired myself a well used MX in exchange (plus some needed film and 
darkroom bits), and today, I went into my local pusher and picked up a 
used Tamron 28-75 f2.8. It's behaving rather nicely on the *istD so far, 
need to try it on the MX as well.

-Adam