Metering limitations of the D100.
Something that isn't immediately obvious how it could affect you negatively when you use the D100, is that the D100 metering is based on the F80 / N80 body. This causes the D100 exposure metering to act inconsistently at times in Matrix Metering mode.
Nikon engineers placed the same metering circuitry, which covers the 35mm image area, into the D100 body. But the D100 has an APS-sized sensor which is much smaller than the 35mm image area. This has the side-effect that the D100 actually meters outside the area you see in the viewfinder. So over-bright or very dark objects just outside the viewfinder area - but still falling inside the metering area, WILL affect your meter reading, without you realising it. This affects both ambient and D-TTL meter readings using Matrix metering.
