Chaos_Realm. Great resource for information.
I am quite new to the Pentax Forums, so please accept my apologies if I am not posting this as it should be. Or if its in the wrong forum.
I have a Super Takumar 1:4 / 200 with some dust inside the 3rd element group. I think thats the correct terminology. I have followed the information provided in the previous link to:
Lens Repair: Asahi Super-Takumar 200/4. But when David gets to this the description of this group he states:
Now you can clean both sides of the 1st and 2nd element and the front side of the 3rd element. I have never needed to access the rear part of the 3rd element but I suspect you twist off the black ring around the edge of the 3rd element and then you’ll be able to tap it out like the 1st element.
It is the rear part of the 3rd element I need to get to, as thats where the dust is. But I cant tell whether the black retaining collars are threaded, glued, or threaded and glued and didnt want to destroy them with enthusiasm....! The black retaining collars do not seem to want to turn, at either the front or the back.
If anyone has any experience of diassembling this group to access both sides of the lenses, I would really appreciate the help and advice.
For a bit more background on the problem I am trying to resolve. The dust appears to be more like black paint that has dropped off the matt black grooved walls of this group. But only in one area. I can see the aluminum specks, glistening through the matt black.
If I am able to remove the lens from both ends, would it be possible to clean the inner grooved barrel, to make sure I get rid of anymore loose paint and then recoat with some form of Matt Black paint from the car spares shop? I dont want to do all this work and then have some more paint flake off.
Thanks
Phil