Originally posted by arnold ...They seem slightly bigger than the K series, but the quality is just as good. Enjoy these metal jewels. To me the MC lenses appear to be better made than the MD versions. I had three of mine converted to 1.5 volts, but for my SRT 303b I sent away for the 1.3 v Wein air cells, as it was still original. The 1.5 volt battery on it caused erratic readings..
My SRT 101 was made in 1969 (black shutter dial and cross-head screws) and would have been market competition with the Spotmatic. At first glance, the Spotmatic looks to be a much smaller camera, though in reality it is only a few millimeters smaller in each dimension. My Pentax KX (just a hair taller than the Spotmatic) is still smaller in comparison and in the hand than the SRT 101. The main item of bulk on the Minolta is the 58mm f/1.4 normal lens which dwarfs the equivalent Super-Takumar. Minolta offered a somewhat smaller 55/1.7, but it is my understanding that most SRT 101 were sold with the f/1.4.
In the hand, both cameras are well-balanced and handle nicely, but the award in this category goes to the Spotmatic. I would expect that a camera salesman at the time would have contrasted the size and handling of the Pentax vs. the advanced feature set of the Minolta. Both cameras have comparable excellent build, though it would be appropriate to note that the Minolta is a much more sophisticated design. (Two thumbs up to Minolta in regards to their battery cover...much better in every way than the Pentax product.) Speaking of batteries, as Arnold noted the SRT Minoltas were calibrated to use the 1.3v mercury cells and unlike the Spotmatic, they are voltage dependent. I have a MR-9 adapter that provides voltage step-down for a 1.5v silver cell, though it is also possible to wire a diode into the meter circuit to accomplish the same thing. (Two thumbs down to Minolta for putting the meter switch on the bottom of the camera...what could they possibly have been thinking.)
I suppose I should do a group shot of my 1969-vintage SLRs. I have representatives from Pentax, Minolta, Mamiya/Sekor, and Ricoh covering the range from budget to fairly expensive. They all look pretty similar and except for Pentax, are all about the same size and weight, though each is distinctively different in actual use.
Steve