Hi, my name is Mike Cantrell. I was recently going through my grandparent's attic and I happened to stumble upon a Pentax Spotmatic, as well as three different lenses: a Super-Takumar 1:3.5/28, a Super-Takumar 1:1.4/50, and a longer lense (Higon?), that says 1:2.8 f= 135mm. Could a veteran photographer explain to me what these things mean, and how they would be used? Any feedback is greatly appreciated!