Okay, so here's the deal. I have a flash for my Olympus, T32, that I will be using on my Mamiya C330. It works on manual flash with G.N. 32 and 16 (meters, at ISO 100). I use my Lunasix to meter my flash (using the ambient dome thing facing the camera, flash set at 32) the flash, turn the dials to match, and I have my exposures. I then see my target is at 3m away and my flash calculator on the flash says f/22. I look at my meter and the dial says f/22 corresponds to 1/8. Now, translate that all for me, please This all took place in a dark corner and would it work outdoors in the shade, too? What exactly does the G.N. have to do with the ISO rating (100) and what changes when I use 400 film? Am I doing this right? What really should I be doing? Please help me on this, I'll kiss your feet (or shoes) clean. Thank you!