hi jerold,
the tmy was actually the new can. i've been shooting fp4 since i got back to film a couple months ago, and i've been having decent results. i'm going to close that can (the tmy2 can that is) for now.
I've also recently posted regarding the exposure calculated by my camera, so now i'm back to my belief that my meter is not perfect. i guess no meter is perfect.
All meters lie, if you want to see how, find a white wall and a black wall with the same light, meter on the white wall, take a picture, then meter on the black wall, take a picture, develop both, and they both will turn out roughly the same shade of grey.
The solution for this, is to memorize the zone system shades, figure your meter is going to be somewhere around zone 5, if the scene is zone 8, then open up 3 stops, putting the image into zone 8, if the scene is zone 2, then close down 3 stops from what the meter tells you. Yes we all have automatic cameras now, and some cameras have 47 different exposure settings, but really we should only use the M mode for most shooting.
The other issue of course is that if your camera is a little older, ( I have two film cameras one a little over and another a little under 30 years old, so I can relate), the meter could be a little off, as could the shutter and aperture. Best solution here is to run tests with film, find a scene that is close to zone 5, and evenly lit, set the camera to 2 stops under, and take an image in 1/2 stop increments to 2 stops over. Process the roll, and print the images, see which image looks closest to properly exposed. If using 100 ASA film and one stop over looks best, then 50 ISO is what should be set on your camera for that film.
If your camera has not been serviced in a while, then you could also send it to a reputable shop for a clean, lubricate, adjust which will set it back to within factory specs. I need to do this with one of my cameras, only problem is it needs a few things done to it, so I might just trade it in on a refurbished one.