Brian,

Out of curiosity, where are all these people experiencing all these problem with the 550/Mark II setup? DPReview by any chance?

Many people in the sports/journalism field have had nothing bad to say about the camera, and the flash system gets raves. In fact, the worst thing argued about the new body is the vertical shutter release being too sensitive.

Just wondering because the ones that received the majority of the bodies, the ones that use them day in and day out, have reported very few problems. Yet the DPReview forums of this world are smothered with bad news. Now that I think about it, it's like that with every body, for every manufacturer, that has ever come out. If I listened to those morons I would have never bought the D100 due to "backfocusing" and would have stayed clear of any other new digital for the very same problem, as well as a myriad of others.

Sorry to get off track there, just gotta be careful where the info comes from. The 550/E-TTL II system, from every report I have heard personally or read about, performs as advertised.

Do you by any chance know if there is a legitimate technical reason for i-TTL disabling TTL in DX flashes?