Jason Greenberg Motamedi , Dec 12, 2002; 11:06 a.m.
I have a large packard which I use. It works fine in "B" or "T" mode, and is quite reliable. I have been unable to obtain constant and reliable speeds using the 'timed' exposure. When I measure it, it seems to vary between 1/8 and 1/15. I tend to go for very long exposures when using the packard, that way I can be more sure of correct times.
I used epoxy and glued step up rings onto the packard, so it screws into the front of my barrel mounted lenses. I purchased a 72-82mm step up ring, and glued the 82mm side to the packard. Using other step-up rings the packard screws into all of the barrel lenses I own. On the other side of the packard, I glued a 77 to 82mm step-up ring and can now attach my lens hood.
I also considered buying a cheapo polarizing filter and removing the glass, so I could rotate the packard. However this may be mostly cosmetic.