and I should know better because all those forums do at DPReview is give me a headache. I only go there because every once in awhile, you can find some useful info buried in all the crap (needle in a haystack), and I visit the higher end camera forums of both companies because there seem to be more "needles" in those haystacks. ;) Even as a Nikon user I can find useful info about PS, third party software etc., in other companies forums.
But as far as the 550EX/Mark II, I thought I saw a post on a Galbraith forum as well with the problem. Just probably someone who didn't know how to work the camera. My mistake. :S
Regardless, though, Nikon is not the only company that changes things up to where the backwards compatibility is compromised in the name of technological development. It happens all the time. Canon did the same thing when they changed lens mounts (I have a buddy who, ridicuously, to this day refuses to buy ANYTHING Canon, because of that).
I still think the new flash system of the Nikon is worth it, but to answer your last question, no, I don't know the technological reason behind the older flashes not working with TTL on the D70.
Again, I should know better. My apologies!!
Originally Posted by Sebastian