Blackmagic Design CINEURSAMWC6KG2 User Manual

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Setting back focus on Fuji LA16x8 BRM lenses

The process of setting back focus on a Fuji LA16x8 BRM lens is slightly different. Instead of an external

back focus ring this lens sets back focus electronically using a button underneath the hand grip.

To set back focus on a Fuji LA16x8 BRM lens:

1 Place a focus test chart, or a flat white item with good high contrast detail,

approximately seventy feet, or as far away as possible, from the camera.

2 Set the zoom switch underneath the lens handgrip to ‘servo’.

3 Locate the ‘F.f.’ button next to the zoom switch. Press and hold the ‘F.f.’ button

for 5seconds. The indicator LED on top of the zoom rocker will flash red.

4 The lens will automatically zoom in. Set focus using the focus ring. It’s important to

note that if you have Blackmagic Focus Demand attached you will need to unplug it

from your camera to adjust the physical focus ring or adjust the focus using the focus

demand for this step and step 5.

5 Press the ‘F.f.’ button again and the lens will automatically zoom out. Set focus using

the focus ring.

6 Press the ‘F.f.’ button to confirm the settings. The top indicator LED will flash red.

The electronic back focus on your Fuji LA16x8 BRM lens is now set.

7 Now zoom in and out slowly and check if your chart remains in focus all the way

through the zoom.

8 If your lens holds focus all the way through the zoom range your back focus is now

set correctly. If you need to make further adjustments, repeat steps 3 to 6.

TIP As temperature changes and wear over time can have subtle effects on the back

focus, it’s worth regularly checking the back focus on B4 lenses to ensure it stays accurate.

Using Box Lenses

Large studio box lenses like Fujinon’s UA27x6.5 and UA125x8 and Canon’s UHD Digisuper

series lenses can also be used with URSA Broadcast G2’s B4 mount. These types of box lenses

allow horizontal and vertical image stabilization on studio style 27x lenses, as well as extreme

zoom ranges with 80x and even 125x magnification which are incredible for broadcasting sports

and outdoor events.

The large size of box lenses means that you will need to setup your camera correctly

on a heavy duty tripod or pedestal, with adequate spacing. This is possible with

URSA Mini Shoulder Kit, a VCT-14 plate and a box lens adapter.

16Using Servo Zoom Lenses

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Blackmagic Design CINEURSAMWC6KG2 URSA Broadcast G2 Camera