Originally posted by Retrocamera.net I have two S-M-C Takumars with focusing issues.
- One Asahi S-M-C Takumar 85mm/1.8 that which focus stop a bit before infinity.
- One Asahi S-M-C Takumar 50mm/1.4 that seems out of focus, is the only lens for which I need to adjust viewfinder diopter.
Any suggestions/ideas how to fix this? I have taken apart one Super-Takumar and on old Pentacon before, but I'm a bit afraid to play experiment with the ones above, I want to be sure I cant put them back together again
I have read all the comments but decided to quote this one because there are some interesting points
if you need to adjust the viewfinder diopter for the SMC Tak 50/1.4 then you need to adjust it for all lenses because the focusing screen is just that, a screen that the image is projected onto, if it is out of focus for any one lens it is out of focus for all of them. period.,
as for the 85/1.8 it could be that the focusing collar, which limits infinity focus, has slipped on the focusing helix. Assuming it is like my 85/1.9 super tak, you can remove the front beauty ring to expose 3 screws that hold by friction of the washers under their heads, the focusing collar to the helix these could have slipped. do a search on the forum and you may find a photo of how to adjust this.