General shimming precautions:
Fix the IFM Shim properly between lens lock and lens mount
The shim's inscription must face camera-outwards
Mount all proper shims correctly without omitting, adding or
losing any. Otherwise, the flange focal depth will not be correct.
Mark your cameras shimmed for IFM-1 to avoid confusion
Specific ALEXA XT shimming (and de-shimming) precautions:
Once ALEXA XT is shimmed for IFM-1: Immediately replace the IFM
Empty Filter Frame with an FSND filter or the IFM Optical Clear filter.
Store the IFM Empty Filter Frame in a safe place: When the ALEXA XT
is no longer shimmed for IFM-1 in the future, the IFM Empty Filter
Frame must be placed back into the filter position.
If you de-shim ALEXA XT: Immediately replace the IFM Optical Clear
filter or any other FSND filter with the IFM Empty Filter Frame (see
Chapter Preparing Internal Filtration on page 223)
To compensate for the change in flange focal depth due to the
shim:
Always use the IFM Optical Clear filter when no filtering is
needed
See Chapter Preparing Internal Filtration on page 223 for details
on IFM Empty Filter Frame and differences between ALEXA XT
and ALEXA Classic
Tools needed:
TX6 torx screwdriver
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