*istD has a stainless steel chassis....... vs a plastic chassis for Canon D100, S2, Sigma, 10D and Digital Rebel have a plastic chassis
*istD has a MUCH larger and a spectacular viewfinder......vs all other DSLRs *istD features glass pentaprism, like 10D has, better than Rebel's penta-mirror *istD viewfinder is therefore brighter *istD has interchangeable screens....... competitors don't *istD can be powered by AA batts........ vs a proprietary battery Lithium, NIMH, nicads and AA alkalines..... get 'em everywhere *istD is faster.......faster in waking up and operating than Canon the Canon takes a week and a half to wake up *istD has smarter autofocus, 11 sensors, 9 of which are cross vs 7 sensors *istD allows user to choose AF sensor(s) ...... 'automatic' with D Rebel *istD has PC terminal (D100 and Rebel Digital do not) (10D does) *istD allows MTF program mode..... nobody else does that *istD allows instant access to White Balance settings, easier than all others *istD allows intentional multiple exposures (no so for D100, 10D or Rebel D) *istD FEELS like a substantial camera, Rebel Digital feels cheap and plastiky Bill*