Quote Originally Posted by srs5694
FWIW, I found this PDF describing adding a 1N34A diode to Olympus OM1 cameras. I didn't find directions any specifically for the Canonet series, but I'm sure the principles would be the same.
Again, I find the OMs work fine with modern batteries with a slight change to the ASA/ISO setting. Surgery (even minor) seems a bit dramatic.

David.