<p><strong>Rick</strong>, thank you for this interesting link. Yes those version look very similiar. I had MD 28/2.8 but not sure which one exactly, and anyway traded it for 35/2.8. </p>
<p><strong>Rick</strong>, looks like they had made 5/5 lens design at the very end of 28/2.8 production<br>
check this table <a href="http://minolta.eazypix.de/lenses/index.html#28">http://minolta.eazypix.de/lenses/index.html#28</a></p>