Bank, my specific reference was to the large pic of the mount on the Balloon Camera Systems page under the Aerial Photography Equipment tab.
It looks like a tamron lens and I cannot figure out if it is a prime with AF/MF (M/F controled by the mount strap) or if the strap controls telephoto with A/F only. How hard could it be to add a second motor and strap for more control?
BTW, I would buy a refurb t3i before I ever put my mark II in this rig (at least not until I already had its replacement in my hands).
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