used film camera just for fun
Thanks. your response prompted the key words i needed. i found the answer at http://www.kenrockwell.com/nikon/compatibility-lens.htm#pro.
i apologize in advance for quoting the ken rockwell. i know some of stuff leaves me wondering but he seems to have a good set of charts on this issue.
tamron 17-50 f2.8
sigma 70-200 f2.8