Quote: NO! There were some early lenses which were 37mm thread mount. I have never seen an adapter to use them on M42 or K mount bodies, but there may be one.
Also there is no adapter to use K mount lenses on M42 mount bodies (ie. Spotmatic, et
thats a bit skewed and I severely doubt the OP will plan on using an Asahi-Kogaku Takumar m37 lens, they are hard to find, super expensive and pointless as an everyday lens. besides those lenses were used on cameras
before the originalAsahi 'Pentax'. as for the k-m42 adapter: Since the diameter of the K mount is larger than that of the screw mount, a K mount lens will have to be mounted
in front of the screw-mount body, and the adapter will act like a short extension tube. Because of this, the focusing scale of the lens will not be correct, and the lens will not be able to focus to infinity.
all pentax K mount lenses can be used on all pentax K mount bodies (with some restrictions) all m42 mount lenses can be used on all K mount bodies with an adapter. thus you have some 25? million pentax lenses manufactured that you can use (not counting 3rd party lenses)
DA lenses however are a problem because they lack an aperture ring. Because the lenses have no aperture ring, the f-stop can only be set via controls on the camera body. These lenses are not usable on many film SLR's but they function properly on all digital SLR's. They also (with the exception of a few (ie: the DA 40mm) have a smaller image circle designed for the 1.5x crop sensor which can give vignetting on a 35mm film plane.
so you can use without any problems:
m42
K
M
A
F
FA
FAJ
DFA
DA (see above paragraph)
Pentax Lens/Camera Compatibility - Mark Roberts Photography Welcome to Bojidar Dimitrov's Pentax K-Mount Page
as for the quantaray and your 35mm cameras, yes they will work but here are your restrictions:
SuperProgram: no AF
K1000: no AF, no use of the 'A' auto aperture