David Nardini
Well-known member
This is a repeat from another thread - but it's the same issue so:
I can verify the 17-55 F/2.8 EF-S lens focused fine using the original ViewFactor Firmware on the Impero. It is jumpy using Birger firmware v1.8. The 70-200 IS behaves the same. It's OK under the old firmware and jumpy with the latest version. They'll get it figured out at some point.
The Canon 85mm 1.8 can do a slow smooth rack but is jumpy on faster racks on both versions of the firmware.
OK thanks ... :
a) so what verison is the 'original' Imperio firmware you talk of (and yes, you are right the 70-200/2.8 IS used to work, cannot comment for the 17-55/2.8 IS as I did not have it back then); only 2 quoted on http://www.birger.us/downloads.htm (v1.5 and v1.4).
b) how can I revert to a prior version of Imperio firmware (working from memory the Mac Application takes you to the latest version); ie: what are the steps to install a specific Imerio firmware via the BEI Device Interface ?
PS : I upgraded to v1.8 as the camera when into record mode every time I mounted the 70-200/2.8 IS & get tethered support; however, I have since disconnected the iData cable (since I cannot get lens data) and perhaps going to a prior firmware will help ?
All very messy ...