Compared to...

Studio scene comparison (RAW)

This is our standard studio scene comparison shot taken from exactly the same tripod position. Lighting: daylight simulation, >98% CRI. Crops are 100%. Ambient temperature was approximately 22°C (~72°F).

Nikon D5000 (RAW) vs. Nikon D90 (RAW)

Nikon D5000
Nikon D90
3.4 MB JPEG (4288 x 2848)
3.5 MB JPEG (4288 x 2848)

The differences between the D90 and D5000 are even more subtle than those between the D60 and D5000. Very subtle differences in the sharpness of the paperclips could be down to fractional differences in focus but the results look very similar across all other crops, which is as you'd expect for such closely related cameras.