Canon LTM First roll through a Canonet 28, hmm...

[Krasnaya_Zvezda]

I bought a Canonet 28 complete with case, Canolite D flash, lens hood. Replaced the seals with on of Jon Goodman's great kits, and put in a 1.35v Weincell. Loaded with Superia, I shot my first roll. I went outside and shot cityscapes on a cloudy-bright day, shot some in shadow (like under trees in a park). Indoor shots with the flash, too. Out of 22 exposures, I was very pleased with all but 2. Of the 16 outdoor shots, one was really underexposed, by at least a couple of stops. (It was not one of the shots in shadow). Shots of the same subject immediately before and after were fine. Similarly, of 6 flash shots(all indoors), one was way overexposed. Same subject shot immediately prior and after were right on the mark, really fine.
So I'm cautiously optimistic about this camera, but I have trepidations as well, because of these anomalies. Any ideas? Is this common with this camera?
For all exposures, there was also a Hoya UV(0) filter in place, and the hood was not in use. I'd appreciate any suggestions.

 

[pshinkaw]

If the camera hasn't been used in a while the shutter can act erratically, sometimes opening too long and sometimes not opening long enough. Also, the trap-needle function used for shutter priority automation on these old rangefinders can also act up. When they act up in concert with each other, the results can be inexplicable.

The Canonet 28 is auto only right? No manual override. That makes it harder to compensate for these types of problems.

The shutter and iris blades may need a little cleaning, or it may loosen up and become more reliable as you use it more. I have had sticky cameras return to normal operation during a hot Texas summer and then get sticky again when used in an air conditioned room tool.

-Paul

 

[Krasnaya_Zvezda]

Thank you, gentlemen. I think I'll run a few more rolls through it and see if it straightens itself out, then try cleaning the shutter blades as you suggest, Paul. If that doesn't do it, then I'll go for the surgical procedure described by greyhoundman. And thanks for the detailed repair notes.