The most prominent feature of this lens is its weight indeed: with 600g it is the heaviest Minolta macro lens you can find. It is a chubby, hefty lens and it oozes mechanical quality. The matching life-size adapter is aptly provided with a tripod mount, while the adapter for the MD Macro 100/4 successor hasn’t one.
My first Minolta MC 135mm lens, this is the oldest of the two MC versions with a rubber-clad focus ring. According to Dennis Lohmann’s lens index it is the optical design with 6 elements in 5 groups; the later version has the 4/4 design in common with the early MD Tele Rokkor 135/2.8 lenses.