After fixing the lack of viewfinder problem with the Yashica telewide finder,and having the Yashica aux lens kit it comes with and lots of old camera's and bits, I decided to try taking shots with the F11 and aux lenses 55mm 1.4 tele and 1.4 wide I found a 55mm Panasonic FZ1 lens adapter was a good fit for the F11 lens as it extends. Now comes the hard part fixing it to the camera in such a way that it can be quickly removed and also making it self centering lots of idea's, a work in progress..