Quote Originally Posted by DBP View Post
As for the battery, the Canonet has a voltage stabilization circuit, so a plain old silver or even alkaline battery will work.
Uh, ummmm ... if you've got the QL17 GIII it does not. It's a basic series circuit and very dependent on voltage. I can post a simplified schematic if anybody needs it.

The commonly available battery will run "hot" and tend toward underexposure.

I've been able to recalibrate the GIII to handle both the new batteries and 1600 film, but it's not something I would recommend unless you really want it.