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Push Auto/Iris
Use this button to momentarily activate ‘auto’ aperture control while in ‘manual’ mode.
This can be combined with iris controls on your camera or ATEM switcher to
great effect.
For example, with your camera set to an iris based auto exposure mode and your lens
aperture set to ‘manual,’ you can freely adjust your lens iris by using the aperture ring
on the lens barrel, however tapping the ‘push auto’/‘iris’ button will momentarily activate
auto exposure, adjusting your iris for the current lighting conditions.
Alternatively, you can set an iris value using the controls on your URSA Broadcast G2’s
LCDtouchscreen. While in ‘manual’ mode, you are free to adjust lens aperture using the
aperture ring on the lens barrel, but tapping the ‘push auto’/‘iris’ button will return the
lens to the preset value on your touchscreen.
Zoom
On the underside of most B4 handgrips, you’ll find a ‘zoom’ switch that can be set to ‘servo’
or‘manual.’ This controls zoom behavior.
Servo
Set this switch to ‘servo’ or ‘s’ to enable servo zoom control. In this mode, the rocker
switch on your handset can be used to zoom your lens in and out, as well as any other
zoom related controls, such as zoom speed and quickzoom. Your lens will also accept
zoom commands from URSA Broadcast G2, Blackmagic Zoom Demand and ATEM
switchers, so long as it is connected to the camera via the lens connector. In this mode,
you typically can’t adjust your lens’s manual zoom ring.
TIP Handgrip zoom rockers are typically linked to zoom speed. Push the
rocker down gently to zoom slowly, push down harder to zoom more rapidly.
12Using Servo Zoom Lenses
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