Enjoy, pity they did not come in a "A" setting version. Get good write ups on PF. I looked for one of these some years ago.
I had the Vivitar 105 which I sold & regret doing so.
Regards
Kevin
Nikon D500 D7200. nikkor 200-500 f5.6, Tamron 100-400, Nikkor 70-200 f4 plus other glass.
http://www.flickr.com/photos/kevpride/
Yes , a "A" version would be sweet ...
There are some 90mm A lenses out there ..
Like the Pentax A 100mm f2.8 Macro , if you have $800 to $1000
Richo has a 105mm Macro f2.8 A lens ( not cheap though , and relatively rare ) , Looks a lot like the Pentax lens ...
Did Sigma and Tamron do some A lenses as well , and there is the Pentax 100mm F4 A lens ...
Honestly , its not that important to have a A lens , since I run manual in anyway when taking Macro shots ...