Originally posted by Jason 407 OK, so the Takumar ended up being ridiculously easy to adjust. Those three grub screws actually connect the focusing ring to the lens innards, allowing focus. Fixing it is a simple matter of focusing to infinity, backing out the screws, adjusting the ring back a bit, tightening a screw, and focusing back toward infinity. I don't even have to remove the front element and can make the adjustments while the lens is on the camera. Cool stuff. Thanks for the help!
As Jason 407 wrote, it's easy enough to do.
The Tak 200mm that I got recently did not quite focus at infinity.
It was obvious at f4, but, less so at f8.
The fix was :
1. adjust the focus to infinity
2. loosen the (3) three small screws on the large focusing ring (you need a set those tiny screwdrivers)
3. move the focus ring back, toward infinity, by 1 or 2 mm
4. re-tighten the screws a bit
5. take pictures of subjects at least 1-2 km away, at f/4 (and f/8 for reference)
6. compare images at 100% crop (on computer)
7. repeat, if necessary.
Ideally, it good to have another pics from another lens, to compare.
I was lucky the first time or so it seems, but today is foggy.
On a dry day, i will compare with a K mount SMC 200mm (K series).
-JF