Quote Originally Posted by lxdude View Post
No. With Takumar lenses the MAN/AUTO switch is used to close the diaphragm to the selected aperture. Lenses without a switch will have to be used at maximum aperture, unless the lens has been somehow modified.
I have 10 to 12 Takumar lens ranging from 24mm to 400mm I have never seen a Takumar M 42 lens that is not either pre set of have the swith. Does anyone have one?