Canon’s EOS 450D / Rebel XSi is priced comfortably below the D90, but like the 400D / XTi and D80 before them, many will compare the two models. Canon has certainly learnt from that previous battle where Nikon equipped the D80 with better features for only a little extra money, and managed to up-sell many new buyers from its arch rival. Canon adopted a similar strategy with the 450D / XSi, fitting it with a number of enhancements over cheaper models, but half a year on, Nikon has once again trumped its arch rival in many respects.
The D90 and 450D / XSi may share roughly the same resolution and both offer Live View facilities, but the D90 has a much higher maximum sensitivity of 6400 ISO to the Canon’s 1600 ISO and quicker 4.5fps continuous shooting to the 450D / XSi’s 3.5fps. Both screens measure 3in, but the D90’s has double the pixels in each axis, delivering far more detailed playback, live view and menu fonts. The D90 also offers video recording, a bigger viewfinder with on-demand grid lines, HDMI output and direct connectivity to an optional GPS accessory.
The Canon does have a few advantages of its own though. It offers 14-bit processing and RAW files, comes supplied with more capable RAW processing software along with remote control capabilities for PCs and Macs. Live View on the Canon also has a Live Histogram and smoother refresh rate. All are nice to have, but the D90 is better-featured overall – so once again if you value the extra features of the Nikon, it could be worth spending the extra. But in terms of image quality, there's not much in it. See our Canon EOS 450D / XSi review for more details.