KL IX , Apr 17, 2006; 10:58 a.m.
It IS a repeat. Check the archives.
FEE means your lens' aperture is not at its minimum setting (e.g., f22). Your 60mm and 70-210mm should have a switch that locks the the aperture setting to the minimum.
And BTW, AIS lenses will mount on your D50 but won't meter.