NDhunter
Experienced observer
Since I only care about IQ, all the Terra has to do is exceed the HT's meager ~67% of central sharpness, as MEASURED by our Dutch Professor friend, to be a winner.:t:
Rick:
Bob's recent test of the new Terra shows a nice sweet spot of 70%, so that means they are both in the same area.
In my experience that is good enough, as far as Zeiss goes.
Jerry