Technocrane is a great tool, and I try to use it whenever the logistics and budget allows for it. I recently shot a commercial on a soundstage in Istanbul where I had to hang actors on wires where they would spend the whole day so Technocrane with a zoom was an obvious choice. I could be versatile and fast.
I designed a shot where we did a straight pull back from a window over a sofa. The lens was 25mm. The distance traveled was about 6-7 meters. The problem was that the beginning and end were too shaky. We talked this over with my DOP and the conclusion was that either the Flighthead was not able to accommodate the large 16.5-100mm (i doubt it) master zoom and/or the operator was not 'sensitive' enough to handle the shot (which is more likely since technocranes don't get rented quite often, so the crews don't have enough manhours).
The speed was set to '6' at first. At that speed the shake was too much to stabilize and strangely on the z-axis too, I don't know how they did it. Then we gradually came down to 3! and even at that speed there was significant vibration during start and stop. The grips kept saying the lens was too heavy and that everybody stabilizes but I have my reservations. I don't think post stabilization is or should be the 'natural side-effect' of a technocrane shot. I mean I should be able to use it like a smooth dolly right?
Supertechnocrane 30' - Flighthead- ArriAlexa - 16.5-100mm Master zoom. --