Paul,As you impley, in that case it could be as practical to use the lens uncocked, in full manual mode, just learning to count the clicks to know at what aperture one is.
There shouldn't be any problems -- I believe all the Takumars (preset diaphragms) and Auto-Takumars were compatible with the Spotmatic and later cameras. The only difference, of course, is that sliding the meter switch up on the Spotmatic will stop the lens down, and if you turn the meter back off, the lens won't reopen until you cock the diaphragm lever on the lens again.
On a camera like the SL (meterless Spotmatic), the only problem would be, essentially, no depth of field preview with an Auto-Takumar (in the diaphragm-cocked-open position) because the lens doesn't have an Auto/Manual switch. The lens would stop down, of course, when you take a picture and would remain stopped down until manually reopened again.
Joe
Andre
Hello,I just bid on an 85mm F:1.8 Auto Takumar. I believe they were made 1960 through 1962 and were really "semi-auto" diaphragm. (Cock to open - stop down when the shutter is fired). I'm not concerned about the optical quality so much as whether there might be a problem with fitting it to my circa 1968 Spotmatic. Of course, if any of you are raving enthusiasts of this optic, I'd loke to hear that too, I know the 85mm F:1.9 Super Takumar I once owned wasa fabulous performer. Paul
--
