Blackmagic Design URSA Mini Pro 12K (PL) - Manual (Page 220)

Attaching the B4 Mount
1 2
Place Blackmagic URSA Mini Pro vertically on a
solid, clean bench top to ensure that the mount
can be inserted vertically. Carefully place the Blackmagic URSA Mini Pro B4
lens mount onto the camera body ensuring the
red dot is at the 12 o’clock position.
3 4
1 3
4
5
2
Using a 2mm Hex driver or torque wrench set to
0.45Nm, loosely turn the five mounting screws until
initial contact is made with the shoulder of the lens
mount. Confirm the lens mount is level and correctly
aligned, then tighten the screws in the order
shown here to an even pressure without over-
tightening the screws.
NOTE When removing the B4 mount, simply follow the instructions in reverse order
from step 4 to step 1.
TIP When using a B4 lens with URSA Mini Pro 4.6K G2 or URSA Mini Pro 4.6K, set the
resolution to 2K 16:9 or lower, and ‘window sensor’ to ‘on’ in the ‘record’ tab of the
dashboard. It is important to use these settings to prevent vignetting of the image, as
B4 lenses do not cover the super 35mm image circle. Once you have attached a B4
lens and adjusted the settings on your camera, you should also check the back focus
on the lens.
220 Interchangeable Lens Mount