A bit of Pentax confirmation please

[leaky5]

Are Spotmatic F’s m42 and ME Supers K mount ?
Just been sorting through some stuff at my mums yesterday and came across most of their old kit
So far
A Spotmatic F + 50 mm iirc
2 x 135mm and 2 x 2x converters in both bayonet and screw mount

There is a ME Super lurking somewhere, but not found it yet

 

[desf]

you are correct

 

[Nod]

AFAIK, yes - Spotties are M42 and MEs K(F).

 

[Plain Nev]

Yes, the Spotmatic is M42. But it's not quite as simple as that. While they will take a standard m42 lens it has to be a late Takumar with the mechanism to actuate the metering. Otherwise you have to stop it down.

This is the one you need.

 

[leaky5]

Bit confused by the double set of aperture markings on the Vivitar.
It moves through the white ones the left ok, but does not open or close the aperture.
But it will not move over to the green set. Wondering if it needs to be on a camera for that

 

[AndrewFlannigan]

This page would seem to answer your question...

What is the purpose of various lens markings on Vivitar 135mm f/2.5 lens with TX mount?

I was gifted some vintage gear. I'm estimating the Vivitar lens in question is from the mid-80's; I believe my relative bought it to supplement an Olympus OM-PC. This lens has color coding on the s...

photo.stackexchange.com

It's a TX series lens which accepted different mounts, similar to the Tamron Adaptall series of lenses.

 

[Plain Nev]

It was a mount specifically designed to confuse everyone. It's no wonder it was short lived.