Blackmagic Design URSA Mini Pro 12K (PL) - Manual (Page 283)

1 2
Place URSA Mini PL vertically on a solid, clean
bench top and remove your lens or dust cap.
The glass filter covering the sensor will be
exposed for the duration of the shimming
process, so it’s important to keep the filter as
clean as possible. Be careful not to touch the
filter while shimming the PL mount. Remove the six PL mount screws using the
2.0mm Hex driver. You may need to occasionally
rotate the PL locking ring clockwise or
counterclockwise to access the screws.
3 4
Carefully lift the lens mount away from the
camera body. Keep the screws safely located
close to the lens mount. Note the alignment of the existing 0.50mm
shim with the alignment pin at the 11 o’clock
position.
5 6
Add or remove shims in 0.10mm increments,
and test with your lenses when the camera
is reassembled to make sure they are hitting
their marks. To 'remove' shims, you might replace
your 0.50mm shim with a 0.40mm shim, for
example. Carefully place the Blackmagic URSA Mini
Pro PL lens mount onto the camera body.
283 Shimming Lens Mounts