Hello all adn g'day from Perth Oz I just purchased a D40 recently and I have a set of Adaptall 2 Tamron lenses that I would like to use with this camera. I used these on my old Pentax ME. First question is: Is this doable? Second question: Is there an adapter ring available for this match up? I understand that the autofocus functionality will be gone. Thanks for any input. Joe from Perth Australia