比20D增加的新功能似乎並不多:
Redesigned body (more EOS 5D like)
Larger LCD monitor (2.5")
Soft-touch shutter release button
AE/AF lock remains set if shutter is kept half-pressed between shots
Faster startup and wake from sleep times
Direct print button on rear of camera (woo!)
Spot metering
100,000 shot shutter cycle
ISO selectable in third stop steps
ISO speed shown in viewfinder as you change it (still not once changed though)
Selectable 5 or 3 fps continuous shooting
PictureStyles instead of simple image parameters
9,999 images per folder (instead of 100 as per the EOS 20D)
15 menu languages (3 new)