Originally posted by JohntheThird Yes, model Tair 3 PhS. I believe it is part of the FS-3 set with the Zenit ES camera. I have tried to scratch off some paint off the ring to make the lens go closer to the sensor, but this modification is quite permanent.
Any tips are welcome.
I have not actual experience with that lens, but I was looking up how to adjust infinity on the Grand Prix style model so I ran across some advice on the other models as well. So this comes second-hand, but apparently you can loosen or remove the big silver focus knob with the four (fairly large) screws holding it on and then reposition the lens so infinity is in the proper place. (Or you would set the lens at current infinity, loosen the knob, and then reposition the *knob* so that it was backed off from infinity somewhat and then retighten it -- now you have a little bit extra to turn before reaching stop.) It depends on whether the stop being reached is on the lens or the knob, but if you can move one without moving the other when loosened, you should be able to figure it out.
Also read that if you still can't reach it, you may have to loosen the ring that says "made in USSR" which prevents it from going farther -- you'll need a tiny screwdriver for that.