So here are the specification of D90
Nikon D90 Key Features
- 12.9 megapixel DX-format CMOS sensor (effective pixels: 12.3 million)
- 3.0-inch 920,000 pixel (VGA x 3 colors) TFT-LCD (same as D3 and D300)
- Live View with contrast-detect AF, face detection
- Image sensor cleaning (sensor shake)
- Illuminated focus points
- Movie capture at up to 1280 x 720 (720p) 24 fps with mono sound
- IS0 200-3200 range (100-6400 expanded)
- 4.5 frames per second continuous shooting (buffer: 7 RAW, 25 JPEG fine, 100 JPEG Normal)
- Expeed image processing engine
- 3D tracking AF (11 point)
- Short startup time, viewfinder blackout and shutter lag
- Slightly improved viewfinder (96% frame coverage)
- Extensive in-camera retouching including raw development and straightening
- Improved user interface
- New optional compact GPS unit (fits on hot shoe)
- Same battery and vertical grip as D80
- Vignetting control in-camera
- 72 thumbnail and calendar view in playback
Other features
- 12.3 MP CMOS sensor (D80: 10.2 MP CCD)
- Dust removal system
- Bigger, better screen (as D3, D300)
- Live View with contrast detect AF
- Movie Mode
- Wider ISO range, upgraded AF system (3D tracking, face detection)
- Active D-Lighting, vignetting control and extra retouching options
- Automatic chromatic aberration correction
- Picture Control presets
- Faster continuous shooting and larger buffer
- Pictmotion slideshows