sweat100
Member
I would like to know if there are any resources that I can read up or anyone who did adjustment on the focus of a 85mm Sonnar (external mount).
My lens front focus slightly, thus it is slightly shy of infinity when the lens is set at infinity focus.
My lens front focus slightly, thus it is slightly shy of infinity when the lens is set at infinity focus.
Highway 61
Revisited
If your Sonnar is a prewar or an immediate postwar Jena model, you can collimate it at infinity by adjusting the collimation shims seen on photo #3 on this Jupiter-9 page :
http://www3.telus.net/public/rpnchbck/Jupiter-9%20dismantle.html
A postwar Zeiss Opton or Carl Zeiss model will be built in a different way, yet you can collimate it as well..
http://www3.telus.net/public/rpnchbck/Jupiter-9%20dismantle.html
A postwar Zeiss Opton or Carl Zeiss model will be built in a different way, yet you can collimate it as well..
sweat100
Member
Mine is a post war Zeiss Opton Sonnar model. I am wondering if the steps to collimation remains about the same, i.e. access from the front. I can’t find much information online. Hoping someone will be able to shed some light.