|Posted: Wed Apr 05, 2017 5:45 pm Post subject:
|The shim it s the "silver" ring on the right, it s not screwed in or anything. I have a suggestion and a small warning, first of all from the question i guess you never opened a lens before so think twice before doing it. If you do it do not follow the tutorial instead remove the focusing ring and the aperture ring, then you have to remove the screw that you ll find under that ring (seen in the pic) that fixes the rear part of the lens with the front one, once you get to the shim remove it, put back the focusing/rear part of the lens but turn it just a bit, do not tighten it all the way, mount it on the camera and by looking in the viewfinder or the back screen with LV see if you ll reach infinity as you now tighten the front part of the lens, sometimes removing the shim is not enough although if yuor lens focuses to 25 m you should be able to get infinity once you file the shim.. Do this before you start to file the shim which it s not an easy thing to do, at least you need a good caliper. I warn you the recession/depression for the screw that keeps the back part in place won t allign anymore after you file the shim, meaning that you ll have to drill a new one! Also all the front part of the lens will now be turned, how much depends on how much you have to file the shim.
If think it s better if you post any answer/question in the tutorial, so we don t hijack this thread.