Hi there,
If you are wanting to get into studio/portrait photography, You should try Nikon D90
Here's a quick rundown of some of the features that most photographers are impressed with in the Nikon D90
* 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
* Expeed image processing engine
* 3D tracking Auto Focus (11 point)
* Short startup time, viewfinder blackout and shutter lag
* Extensive in-camera retouching including raw development and straightening
I hope that, It gives you some idea and information about this Nikon D40
If you want to know more about photography there are tips and techniques about it
you should check this out -- http://bit.ly/bhKQhq