ken rockwell, che molti snobbano ma che io invece trovo molto pragmatico, parlando della D90 rispetto alle superiori scrive
http://www.kenrockwell.com/nikon/d90.htm-----------
What about the D300 and D700?
Each of these is much tougher (and heavier) than the D90 if you're going to bang it around. Each is also much faster if you're shooting a lot of sports.
The funny reality of the world today is that the newer D90 has identical technical image quality to the older D300 and $5,000 D3 in good light.
Paying more gets you more durability and faster focus and frame rates, but that's about it. All these have the same superb LCD and image quality.
If you shoot in the dark, pro photographers first improve the light. If you can't improve the lighting and need to shoot at high ISOs, the D700 and D3 are vastly superior to an DX camera.
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Riassumendo: stessa qualit� di immagine ed inferiore in velocit� di raffica ed autofocus.
Fondamentalmente risulta inferiore per foto sportive ed in movimento.
Per alcune cose pare pi� semplice da utilizzare (e quindi "migliore" rispetto la D300) ma credo siano poco importanti.
Better than the D3, better than the D700 and better than the D300:Works with the superior $17 ML-L3 wireless remote release.
ADR is on by default.
Adds the AF-A AF mode.
Easier adjustment of Advance Modes, frame rates, remote control and self timer, especially in the dark.
Easier Live View mode with dedicated button! The other cameras use the rotary top switch, which sucks!
Makes movies with sound. The D3 at least records sound alone, which the D90 can't.
The AF Selector Lock is better designed so it won't get knocked by accident.
The Self timer can make multiple exposures, helping ensure everyone's eyes are open in at leas tone of the shots.
Nikon finally fixed the design flaw where by default the Modeling Flash fired if you hit the Depth-of-Field preview button. Thank you Nikon!
The dials work during playback by default. In the other cameras, I have to look for a few minutes to find this option hiding in the Custom Settings > Controls > Customize Command Dials option.
By default, the D90 won't shoot without a card. The D3, D300 and D70 default to the very dangerous DEMO setting which lets you happily shoot an entire wedding, look at each shot on the LCD in every display mode and zoom setting, and not realizing until the end of the day that you had no card in the camera!
Better than the D3 and Better than the D300:Dedicated rear INFO button.
Can call up the top item in My Menu with the FUNC button. This makes the D90 much faster to use, because I now can get into the menus and set everything with just one hand!
ADR modes include AUTO.
The rear LCD Monitor-on times are selectable separately for Playback, Menus, the INFO panel and Image Review.
The D90 has both the My Menu menu and Recent Items Menus. (D3 and D300 lack the Recent Items menu)
Better than the D300Far nicer rear multi selector. The D300 has a mushy single piece of crap, while the D3, D700 and D90 have much better two-piece controls with a separate center OK button.