Um, Manual... auto metering? I'm confused.
If you did shoot manual then ignore my first reply (we posted together, I did not see your post directly above mine)
If shutter speed and aperture were constant (set manually) then maybe you have an auto ISO mode set, like highlight tone priority?
Perhaps I misunderstood the question - I shoot in manual mode only,always have ISO set to 100,and the metering,or white balance,set to auto. Did I get that right?






