I was able to find a used Canonet 28 for $5. I bought it on a whim. I was curious to know if you can use it without the battery. I get the shutter to fire when I manually set the aperture and film speed. "A," the electro eye setting, obviously doesn't work. Does anybody know if I could get decent exposures using the manual controls alone? I see differences in aperture size as I move the stops down, but the shutter speeds seem the same regardless of film speed setting. I checked a couple of other websites first, but got mixed answers. The manual pdf didn't mention these specifically. The only clue I could find was that the film speed lever was in sync with the electro eye setting. Thanks for the help.