I bought this camera 5 month ago and I am still finding new things in it. The camera having too many creative feathers in terms of clicking and modifying feathers.
The 400D uses the image processor, as is used in the 350D. the 400D file numbering system holds 9, 999 pictures as opposed to 100 photos in one folder. Support for the Media Transfer Protocol(MTP) USB protocol is available since version 1.1.0. The latest firmware available is version 1.1.1.
such as intervalometer and custom auto-focus patterns make camera very easy to use.
I choose to canon because it’s never get hang or shut down automatically, other brand has some problem when device is over load it will hang or shut off.
it is good choice to buy for professional or casual purpose.